可生物降解的藻纺织品光合作用

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202540. （2021•西安中学•八模） A living，bio-degradable （可生物降解的）fabric named "Biogarmentry" has been invented.Made from algae （藻），the textile （纺织品） purifies the air around it through photosynthesis （光合作用）.
   Researchers claim it's the first living textile，and have fashioned the material into sheer，cloak-like garment.While prototypes （雏形） like these are still in the early stages of research and design，and far from mass production，they challenge the fashion industry to reimagine ways it can reduce its large carbon footprint through alternative fabrics.
   Fashion is one of the world's most polluting industries.It's responsible for more carbon emissions than international flights and shipping combined，amounting to 10% of all greenhouse gasses emitted globally.The crops traditionally used to make clothing absorb carbon as they grow，but most natural materials are still carbon emitters.Take a single T-shirt made of cotton as an example.The estimated footprint of a cotton shirt over its lifetime is 15 kilograms （33 pounds） of carbon dioxide，with most of that emitted during the energy-intensive production and dyeing（染色） processes.
   In recent years，environmental start-ups have proposed a number of alternative natural fibres，many of which have the potential to sequester carbon but none have been shown to achieve zero emissions.As algae has the ability to trap carbon，a carbon-negative raincoat made of marine algae has been created.Algae-based materials are，currently，where electric vehicle technologies were a decade ago.The technology is now ready for prime time.When the resulting garments are commercially available，we can imagine people wearing their own organic cloak，spraying their organism as they go to work and encouraging their algae to purify the air.

（1）What's the text mainly about？
A．A textile helping purify the air.
B．An industry causing pollution.
C．A way to achieve zero-emission.
D．A trend in the fashion industry.
（2）Which of the following is the most environmentally-friendly？
A．An international flight.
B．Clothing made of cotton.
C．A petrol-powered vehicle.
D．A raincoat made of algae.
（3）What does the underlined word "sequester" in Paragraph 4 probably mean？
A．increase.
B．create.
C．trap.
D．release.
（4）Which word best describes the author's attitude to algae-based materials？
A．Skeptical.
B．Optimistic.
C．Conservative.
D．Objective.

共享时间:2021-06-18 难度:2

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（1）A.主旨大意题。根据原文第一段"A living，bio﹣degradable （可生物降解的）fabric named "Biogarmentry" has been invented.Made from algae （藻），the textile （纺织品） purifies the air around it through photosynthesis （光合作用）.一种名为"生物服装"的生物可降解织物被发明出来。这种由海藻制成的纺织品通过光合作用净化周围的空气。"可知文章主要介绍一种新型的可以净化空气的纺织品。A.A textile helping purify the air.（有助于净化空气的纺织品）正确。故选A.
（2）D.细节理解题。根据原文最后一段"As algae has the ability to trap carbon，a carbon﹣negative raincoat made of marine algae has been created.由于海藻具有捕获碳的能力，一种由海藻制成的负碳雨衣应运而生。"以及"When the resulting garments are commercially available，we can imagine people wearing their own organic cloak，spraying their organism as they go to work and encouraging their algae to purify the air.当生产出来的衣服在市场上销售时，我们可以想象人们穿上自己的有机斗篷，在上班时喷洒他们的有机物质，鼓励他们的藻类净化空气。"可知藻类制造的衣服能够净化空气。D.A raincoat made of algae.（用海藻做的雨衣）正确。故选D.
（3）C.词义猜测题。根据原文第四段" In recent years，environmental start﹣ups have proposed a number of alternative natural fibres，many of which have the potential to sequester carbon but none have been shown to achieve zero emissions.近年来，环保初创企业提出了许多可替代的天然纤维，其中许多具有隔离碳的潜力，但没有一种被证明可以实现零排放。"结合前后文可知划线处为"使...陷入；绊住"之意。文中这里指的是使得碳被困住，从而更加环保。A.increase.增加；B.create.创造；C.trap.使...陷入D.release.释放。故选C.
（4）B.观点态度题。根据原文最后一段"When the resulting garments are commercially available，we can imagine people wearing their own organic cloak，spraying their organism as they go to work and encouraging their algae to purify the air.当生产出来的衣服在市场上销售时，我们可以想象人们穿上自己的有机斗篷，在上班时喷洒他们的有机物质，鼓励他们的藻类净化空气。"可知作者对这一产品很憧憬。A.Skeptical.怀疑的；B.Optimistic.乐观的；C.Conservative.保守的；D.Objective.客观的。故选B.

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204961. （2022•阎良区•高二上期末） What makes a human being？Is it our thoughts？Our emotions？Our behavior？All of these things make us who we are，but at the center of the matter is the genome（基因组）-the genes inside our bodies that may determine everything from our hair colour to our intelligence.But if we could change our genome，what would it mean to us？
   In an online video posted on Nov 26，He Jiankui，a biological researcher from Southern University of Science and Technology in China，said that he had helped to make the world's first genetically edited babies.
   These are twin girls，born in November，with genes edited in an attempt to help them fight against possible future infection with the AIDS virus.
   He said that he chose to do this because HIV infections are a big problem in China. "I feel such a strong responsibility that it's not just to make a first，but also to set an example，" he told the Associated Press（AP）.
   The announcement has caused an international storm.Some believe that success will benefit the families of HIV patients.Considering that HIV is "a major and growing public health threat，" attempted gene editing for HIV is justifiable，Harvard Medical School genetics professor George Church told AP.
   However，others think that gene editing technology is still unsafe to attempt.
   "Gene editing itself is experimental and is still associated with unexpected mutations（突变），causing genetic problems early and later in life，including the development of cancer，" Julian Savuleseu，a specialist in ethics at the University of Oxford，told BBC News.
   Others fear that this could open the door to using gene editing technology to make designer babies.It might give the parents the choices to choose everything from their baby's eye color to intelligence.
   "You could find wealthy parents buying the latest upgrades for their children，leading to even greater inequality than we already live with，" Marcy Darnovsky，director of the San Francisco Center for Genetics，told BBC News.

（1）Why did He Jiankui make the genetically edited babies？
A．Because he wanted to be a leader in gene editing technology.
B．Because he tried to do his part in fighting against HIV infection.
C．Because he attempted to help the twin girls who were infected with AIDS.
D．Because he wanted to become the first to make the genetically edited babies in the world.
（2）What does the underlined word "justifiable" in Paragraph 5 probably mean？
A．Absurd.
B．Hopeless.
C．Skilful.
D．Acceptable.
（3）For those who are against gene editing technology，their reasons are as follows EXCEPT        .
A．Gene editing can determine everything inside a person's body
B．Gene editing may widen the gap between the rich and the poor
C．Gene editing may enable wealthy parents to design their babies
D．Gene editing can cause genetic problems sooner or later in life
（4）Which of the following might be the best title of the passage？
A．Gene Editing：The Genie in the Bottle.
B．Gene Editing：The Way We Should Go.
C．Gene Editing：Hope or Fear for Human Beings.
D．Gene Editing：A Great Success in Human History.

共享时间:2022-02-10 难度:1 相似度:1.5

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202767. （2020•西安中学•二模） After the cure of pneumonia，Wuhan Dad reread the letter his daughter left at the bedside，tears filled his eyes．In the second vlog series，make a video call to a friend in Wuhan，China Daily reporter Xiao Peng interviewed three Wuhan residents by video and phone，among whom three have just been released from isolation．Their lives have been transformed by pneumonia （肺炎） caused by the new coronavirus （冠状病毒）．
   The first interviewee was Tian Fuxin from Wuhan．He was admitted to hospital on January 20 and discharged from hospital on January 30 after 10 days of isolation treatment．
   "When I was admitted to hospital，I was very anxious．But after a few days I was OK．And if you're infected by the novel coronavirus，the government covers your medical expenses．Our meals are the same as the doctors' and nurses"．
   "Every time I saw themin their protective gear，I felt moved because I know that stuff must be awful to wear，with goggles fogged up and so on．I can't thank them enough．Those patients who were discharged early like us are very grateful to the people who helped us，because without them，it's hard to say how we could have survived．"
   Worried about his daughter's safety，the family had her back to the university in Shanghai before the closure．She was quarantined in Shanghai on the first day of the lunar New Year and was recently confirmed to be well enough to end the quarantine．The daughter left her father a letter in which she read between the lines her guilt not being able to accompany him and her love for him．
   "I can't look after you every time you are in hospital．I was right with you，though I didn't realize how ill you were．Nothing could be done except get away．" "Dad，I love you．After growing up，I think I've never said that．You must hold on．I can't live without you，Dad．" "Don't be pessimistic．Little psychological tricks are helpful．You have to tell yourself I am feeling better．
   Because of infectious virus as well as its outbreak Tian Fuxin fell ill，experiencing a period of fighting the disease．However，he received the words his daughter had not long been able to speak out "Dad，I love you．"

（1）Whom does the underlined word "them" in the fourth paragraph refer to？
A．Wuhan residents
B．medical staff
C．the three interviewees
D．the government
（2）Which of the following is FALSE？
A．The daughter couldn't care for her father when he was in hospital．
B．The meals of the pneumonia patients are quite different from those of doctors．
C．daughter was also isolated in Shanghai on the first day of the lunar New Year．
D．Tian Fuxin has been cured and has recovered from pneumonia．
（3）The daughter left the letter to        ．
A．show little psychological tricks are helpful
B．inform him her being quarantined in Shanghai
C．encourage him to fight disease and she loved him all the way．
D．to say goodbye to the father．
（4）The article comes from        ．
A．a magazine
B．a fiction
C．a brochure
D．a newspaper

共享时间:2020-03-27 难度:1 相似度:1.5

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204707. （2022•西安中学•高一下期末） American high school students are terrible writers，and one education reform group thinks it has an answer：robots.Or，more accurately，robot-readers—computers programmed to scan students' essays and spit out a grade.
   Mark Shermis，professor of the College of Education at the University of Akron，is helping to hold a contest，set up by the William and Flora Hewlett Foundation （WFHF），that promises ﹩ -100，000 in prize money to programmers who write the best automated grading software. "If you're a high school teacher and you give a writing task，you're walking home with 150 essays，" Shermis said. "You're going to need some help."
   Automated essay grading was first proposed in the 1960s，but computers back then were not up to the task.In the late 1990s，as technology improved，several textbooks and testing companies jumped into the field.Today，computers are used to grade essays on South Dakota's student writing assessments and a handful of other exams，including the TOEFL test of English fluency，taken by foreign students.
   The Hewlett contest aims to show that computers can grade as well as English teachers—only much more quickly and without all that depressing red ink. "Automated essay scoring is objective，" Shermis said. "And it can be done immediately.If students finish an essay at -10 pm，they will get a result at 10：01 pm."
   Take，for instance，the Intelligent Essay Assessor，a webbased tool marketed by Pearson Education，Inc.Within seconds，it can analyze an essay for spelling，grammar，organization，and help students to make revisions.The program scans for key words and analyzes semantic （语义的） patterns，and Pearson claims that it can understand the meaning of text much the same as a human reader.

（1）The text is written to introduce        .
A．robot-readers
B．education reform in America
C．Hewlett contest
D．William and Flora Hewlett Foundation
（2）From Paragraph 3，we know that in the 1960s        .
A．computers were not easy to get
B．automated grading software was popular
C．people refused automated essay grading
D．computers couldn't grade essays automatically
（3）What does Paragraph 4 focus on？
A．The prize of Hewlett contest.
B．The advantages of automated essay scoring.
C．The application of automated essay scoring.
D．Teachers' opinions about Hewlett contest.
（4）The Intelligent Essay Assessor can        .
A．rewrite essays
B．underline the mistakes in red ink
C．understand the meaning of text
D．correct key words and patterns

共享时间:2022-07-04 难度:1 相似度:1.5

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202673. （2020•西安中学•三模） Even though vaccination（接种疫苗） is a powerful defense against disease，some voices are against it．In a recent letter，the American Medical Association（AMA） urged big social media including Amazon，Facebook and Google to take action to defend medical science on their platforms．
   It said that vaccine-preventable diseases that do harm to the public health like measles（麻疹） are on the rise．Measles cases worldwide jumped more than 30% in 2017 compared to 2016，with the largest increases seen among nations in the Americas，Europe and the Eastern Mediterranean．Vaccine-preventable diseases are increasing largely because many people are unwilling to get vaccinated．And some of these people even encourage others to refuse vaccination．So this year，the World Health Organization （WHO） declared the anti-vaccination movement a top-10 health threat．
   "Vaccination is one of the most cost-effective ways of avoiding disease - it currently prevents 2-3 million deaths a year，and a further 15 million could be avoided if global coverage of vaccinations improved，" WHO said．
   A research article published in 1998 in a medical journal suggested a link between a vaccine and the development of autism（自闭症） in young children．Although the research has been suspected and many other studies have proved that vaccinations do not cause autism，the article is still impressing people strongly today．Another reason for the growth in the anti-vaccination movement is widespread misinformation on social media，which can turn people against vaccination．If a concerned parent consistently sees information in their Newsfeed that casts doubt on the safety of vaccines，it could cause them to disregard the advice of their children's physicians and public health experts and refuse to follow the recommended vaccination schedule．So access to true information about vaccine safety is badly needed．

（1）What does the AMA require social media to do on their platforms？
A．Unite to develop new vaccines．
B．Stop vaccine misinformation．
C．Give up the anti-vaccination movement．
D．Introduce vaccine-preventable diseases．
（2）Why does the author mention the measles cases？
A．To declare measles can be prevented．
B．To prove vaccination doesn't work well．
C．To show the result of anti-vaccination．
D．To explain the reason for avoiding vaccination．
（3）Which of the following DOESN'T play a role in the anti-vaccination movement？
A．The costs of vaccination．
B．People's concerns over vaccine safety．
C．A research relating vaccination to autism．
D．Misinformation spread on social media platforms．
（4）What is the author's attitude towards vaccination？
A．Doubtful
B．Ambiguous
C．Positive
D．Negative

共享时间:2020-04-08 难度:1 相似度:1.5

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202635. （2020•西安中学•四模） In the early days of sea travel，seamen on long voyages lived exclusively on salted meat and biscuits．Many of them died of scurvy （坏血病），a disease of the blood which causes swollen gums （牙龈），livid white spots on the flesh and general exhaustion．On one occasion，in 1535，an English ship arrived in Newfoundland with its crew desperately ill．The men's lives were saved by Iroquois Indians who gave them vegetable leaves to eat．Gradually it came to be realized that scurvy was caused by some lack in the sailors' diet and Captain Cook，on his long voyages of discovery to Australia and New Zealand，established the fact that scurvy could be prevented by the supply of fresh fruit for the sailors．
   Nowadays it is understood that a diet which contains nothing harmful may yet result in serious disease if certain important elements are missing．These elements are called "vitamins"．Quite a number of such substances are known and they are given letters to identify them，A，B，C，D，and so on．Different diseases are associated with shortages of particular vitamins．Even a slight lack of Vitamin C，for example，the vitamin most plentiful in fresh fruit and vegetables，is thought to increase significantly our susceptibility （敏感度） to colds and influenza．
   The vitamins necessary for a healthy body are normally supplied by a good mixed diet，including a variety of fruit and green vegetables．It is only when people try to live on a very restricted diet，say during extended periods of religious fasting （斋戒），or when trying to lose weight，that it is necessary to make special supply to make up for the missing vitamins．

（1）Scurvy is a disease that is caused by       ．
A．salted meat and biscuits
B．exhaustion
C．lack of some essential substances
D．need of fresh vegetables and fruits
（2）To avoid such disease as scurvy，it's better for us       ．
A．not to eat much salted meat
B．to supply our diet with various vitamin pills
C．to have more fresh fruit and vegetables
D．to develop a good dietary habit
（3）Based on the passage we can safely conclude that if our diet is not comprehensive enough，       ．
A．vitamin pills are of no use
B．nutritious food might be unhealthy
C．vegetable leaves can be a good treatment
D．religious fasting may help out a lot
（4）Which of the following sentences best expresses the main idea of the passage？
A．Shortages of Vitamin C may cause serious diseases．
B．Fresh fruit and green vegetables contain enough nutrition that is necessary for a healthy body．
C．Vitamins play a vitally important role in people's health．
D．A good mixed diet normally supplies sufficient vitamins for us．

共享时间:2020-04-26 难度:1 相似度:1.5

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202538. （2021•西安中学•八模） $德优题库$ China's Tianwen 1 Mars probe （探测器） conducted its fourth orbital correction on Friday evening，as the spacecraft makes ready for its arrival in orbit around Feb.10，according to the China National Space Administration.
   The name comes from the long poem Tianwen，meaning Heavenly Questions or Questions to Heaven，written by Qu Yuan，one of the greatest poets of ancient China.In Tianwen，this name conveys the Chinese nation's steady effort in pursuing truth and culture of exploring nature and the universe.CNSA also unveiled（发布）the logo of China's planetary exploration missions，featuring the letter C，signifying China，international cooperation and capacity of entering space.
   Tianwen 1 has flown for 197 days and more than 465 million kilometers on its journey to the planet.It is now around 184 million km from Earth and 1.1 million km from Mars.Depending on the two planets' orbits，Mars is between 55 and 400 million km from Earth.Mars probe Tianwen 1 is seen in its first selfies in space on Oct.1，2020.The administration also published a black-and-white picture of Mars taken by Tianwen 1，the first snapshot （抓拍的照片）from the Chinese craft.
   Tianwen 1，the country's first independent Mars mission，was launched by a Long March 5 heavy-lift carrier rocket on July 23 from the Wenchang Space Launch Center in Hainan province，kicking off the nation's planetary exploration program.
   A successful landing would make China only the second nation to place a spacecraft on the Martian planet.China would also be the first to successfully orbit，land and deploy（部署）a vehicle in the same mission.According to experts，searching for signs of life on Mars will be the first and foremost scientific goal.China is open and inclusive in the development of its space technology not least because it believes that the exploration of outer space should help build a community with a shared future for mankind.

（1）Why is Qu Yuan's poem mentioned in the text？
A．To tell the origin of space exploration.
B．To describe space exploration vividly.
C．To highlight the importance of space exploration.
D．To show Chinese continuous struggle in space exploration.
（2）The main idea of Paragraph 3 is about Tianwen 1's         .
A．function
B．development
C．operation
D．structure
（3）What is the essential goal of exploring Mars？
A．To build a common future for man.
B．To prove our achievement in space research.
C．To discover signs of life on this planet.
D．To expand the understanding of the space.
（4）What can we learn from the text？
A．Letter C Logo symbolizes creation between countries.
B．China was the first nation to land a spacecraft on Mars.
C．Tianwen 1 made its fifth orbital correction around Feb.10.
D．Tianwen 1 started a new chapter in Chinese planetary exploration.

共享时间:2021-06-18 难度:1 相似度:1.5

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202520. （2021•西安中学•二模） Researchers studied data from the National Health and Nutrition Examination Survey，organized by the Centers for Disease Control and Prevention （CDC） in the United States and looked at the relationship between cups of coffee drunk per day and both total body fat percentage and abdominal or trunk fat.
   They found that women aged 20---40 who drank two or three cups of coffee per day had the lowest level of obesity，3.4% lower than people who did not consume coffee.Among women aged between 45-69，those who drank four or more cups had an obesity percentage 4.1% lower.
   Overall，the average total body fat percentage was 2.8% lower among women of all ages who drank two or three cups of coffee per day.
   The findings were consistent whether the coffee consumed was caffeinated（含咖啡因的）or decaffinated and among smokers/non-smokers and those suffering from chronic diseases（慢性病） when compared to those in good health.
   In men，the relationship was less significant although men aged 20-44 who drank two or three cups per day had 1.3% less total fat and 1.8% less trunk fat than those who didn't consume coffee.
   Around 7 million tons of coffee is consumed globally every year.Dr.Lee Smith，senior author of the study，said： "Our research suggests that there may be active compounds in coffee other than caffeine that manage weight and which could potentially be used as anti-obesity compounds."
   "It could be possible that coffee，or its effective ingredients could be integrated into a healthy diet strategy to reduce the burden of chronic conditions related to the obesity，" Dr.Lee Smith added. "It's important to interpret the findings of this study in light of its limitations - the study was at a specific point in time so trends cannot be established.However，we don't believe that someone's weight is likely to influence their coffee consumption."

（1）What can be inferred from the text？
A．Coffee has less effect on men than women in fat according to the findings.
B．The women aged 20-44 like to drink two or three cups of coffee per day.
C．The researchers found that the coffee consumers preferred caffeinated coffee.
D．Trends will be established to limit people's weight by their coffee consumption.
（2）What in coffee mainly influences body fat according to Dr.Lee Smith？
A．The caffeine.
B．The decaffeinated.
C．The effective compounds.
D．The rich nutrition.
（3）What might the study be used for？
A．Developing a new coffee.
B．The treatment of obesity.
C．The treatment of heart disease.
D．The study of physical differences between the sexes.
（4）Where is this text most likely from？
A．A diary.
B．A guidebook.
C．A novel.
D．A magazine.

共享时间:2021-03-16 难度:1 相似度:1.5

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202501. （2021•西安中学•一模） Free school meals are back in the news.Footballer Marcus Rashford's petition（请愿书） to extend free school meals provision （供给） into the school holidays has collected 1.1 million signatures，causing the government to reverse policy.It has restarted the debate over free school meals，fuelled，most recently，by figures forecasting that if the government ends as planned the current ￡20 top-up（附加款），another 200，000 children will slip into poverty.This is in addition to the 550，000 children already living in poverty previous to COVID-19.
   The roots of the current school meals system lie in the mid-19th century.In Manchester，independent charities as well as official bodies started to provide free meals for undernourished children in the 1870s.When education became compulsory in the following decades，the extent of the issue became apparent.Proponents of feeding starving children pointed out that it was due to government order that children were in school，not working and contributing to the family food budget，so the government should pay.
   Reception was mixed.Then，as now，children rejected foods they weren't used to.Diaries of the time talked of "little bags of mystery" （sausages）.Some children were put off brassicas （芥菜类） for life.Finding the balance between cheap and good proved hard.The chief medical officer talked about the lack in calorie value and elements of a well-balanced diet which a needy child does not get at home，such as milk，cheese，eggs，green vegetables，fruit and meat.In 1980，the Tory government，desperate to cut costs，made provision largely optional and abolished nutritional standards.Over the next 15 years convenience and cost became the most important.
   Today，school meals provision is linked to benefits：in England around 17 percent of children are entitled to free school meals.Provision is outsourced （外包），leading to huge variation.In the last year，we've seen all of the age-old debates repeated once more.How do we decide who is entitled？How do we guarantee quality？Who decides what children eat？Who pays？Undernutrition does not just have physical effects，but also affects behavior and ability to learn.It has a lifelong impact.The arguments around free school meals seem never to end.But they are hugely important and，until poverty is ended，they will not and should not go away.

（1）Why did Marcus Rashford start the petition？
A．To feed an increasing number of children in poverty.
B．To restart the debate over free school meals.
C．To raise fund for hunger relief for children.
D．To lift children out of poverty.
（2）What does the paragraph 2 probably talk about？
A．Manchester and independent charities set up school free meals.
B．It was government that should pay for the school meals.
C．How did the current school meals system come into existence？
D．It was compulsory education that contributed to free school meals.
（3）What can we infer about school meals from paragraph 3？
A．Some children liked brassicas provided in the school.
B．School meals were both tasty and cheap.
C．School meals failed to meet children's nutritional needs.
D．The Tory government chose nutrition over cost.
（4）What does the writer think of the debates over free school meals？
A．Never-ending.
B．Meaningless.
C．Influential.
D．Necessary.

共享时间:2021-03-08 难度:1 相似度:1.5

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204904. （2022•雁塔二中•高二下期末） California has lost half its big trees since the 1930s，according to a study to be published Tuesday and climate change seems to be a major factor（因素）.
   The number of trees larger than two feet across has declined by 50 percent on more than 46，000 square miles of California forests，the new study finds.No area was spared or unaffected，from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles.In the Sierra high country，the number of big trees has fallen by more than 55 percent；in parts of southern California the decline was nearly 75 percent.
   Many factors contributed to the decline，said Patrick McIntyre，an ecologist who was the lead author of the study.Woodcutters targeted big trees.Housing development pushed into the woods.Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources（资源）.
   But in comparing a study of California forests done in the 1920s and 1930s with another one between 2001 and 2010，McIntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development.
   The loss of big trees was greatest in areas where trees had suffered the greatest water shortage.The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed，taking into account such things as rainfall，air temperature，dampness of soil，and the timing of snowmelt （融雪）.
   Since the 1930s，McIntyre said，the biggest factors driving up water stress in the state have been rising temperatures，which cause trees to lose more water to the air，and earlier snowmelt，which reduces the water supply available to trees during the dry season.

（1）What is the second paragraph mainly about？
A．The seriousness of big-tree loss in California.
B．The increasing variety of California big trees.
C．The distribution of big trees in California forests.
D．The influence of farming on big trees in California.
（2）Which of the following is well-intentioned but may be bad for big trees？
A．Ecological studies of forests.
B．Banning woodcutting.
C．Limiting housing development.
D．Fire control measures.
（3）What is a major cause of the water shortage according to McIntyre？
A．Inadequate snowmelt.
B．A longer dry season.
C．A warmer climate.
D．Dampness of the air.
（4）What can be a suitable title for the text？
A．California's Forests：Where Have All the Big Trees Gone？
B．Cutting of Big Trees to Be Prohibited in California Soon
C．Why Are the Big Trees Important to California Forests？
D．Patrick McIntyre：Grow More Big Trees in California

共享时间:2022-07-14 难度:1 相似度:1.5

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202388. （2021•西安中学•十模） Researchers at the University of Maryland have turned ordinary sheets of wood into transparent material that is nearly as clear as glass，but stronger and with better insulating properties（隔热性）.It could become an energy efficient building material in the future.
   Wood is made of two basic ingredients：cellulose，which are tiny fibres，and lignin （木质素），which is a glue-like material that bonds the fibres together to give it strength.The lignin also contains molecules called chromophores，which give the wood its brown color and prevent light from passing through.
   Early attempts to make transparent wood involved removing the lignin，but this involved harmful chemicals，high temperatures and a lot of time，making the product expensive and somewhat fragile.The new technique is so cheap and easy that it could literally be done in a backyard.
   Starting with pieces of wood a meter long and one millimeter thick，the scientists simply brushed on a solution（溶液）of hydrogen peroxide using an ordinary paint brush.When left in the sun，or under a UV lamp for an hour or so，the peroxide remove color from the brown chromophores but left the lignin undamaged，so the wood turned white.Next，they filled the wood with a tough transparent epoxy，which filled in the spaces in the wood and then hardened.This made the white wood transparent.
   As window material，it would be much more resistant to accidental breakage.The clear wood is lighter than glass，with better insulating properties，which is important because windows are a major source of heat loss in buildings.It also might take less energy to produce clear wood because there are no high temperatures involved.
   Transparent wood could become an alternative to glass in energy efficient buildings，or perhaps coverings for solar panels in harsh environments.There could be no end of uses.

（1）What is the second paragraph mainly about？
A．The classification of wood strength.
B．The characteristics of wood.
C．The causes of wood color.
D．The structure of wood.
（2）How did the researchers make wood transparent in the past？
A．By removing the lignin.
B．By reducing chemicals.
C．By lowering the temperature.
D．By changing the experiment site.
（3）What is the function of the epoxy？
A．To make the wood stronger.
B．To take away the brown color.
C．To turn the wood transparent.
D．To fill the spaces in the wood.
（4）Which can be a suitable title for the text？
A．Replacing Glass with Wood
B．Turning Wood Transparent
C．Energy Saving Material
D．Eco-friendly Alternative

共享时间:2021-07-07 难度:1 相似度:1.5

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202368. （2021•西安中学•四模） Sure，chocolate is a delicious treat，and it's a staple of some of our favorite desserts.But it's not a health food，so it should be enjoyed in moderation-right？
   Well，it turns out that eating chocolate might actually have a pretty significant health benefit.According to research conducted by five scientists in Italy，compounds found in chocolate，called flavanols，can help boost cognitive （认知的） performance.Yup，chocolate's good for your brain.
   The scientists，studying at the Universities of Rome and L'Aquila，summarized research from ten different studies.The studies assessed people's performance on cognitive tests before and after eating cocoa or chocolate.The results were pretty telling：in nine out of the ten studies，there was a noticeable improvement after the subjects had eaten the chocolate.The scientists found improvements in "general cognition，attention，processing speed and working memory." Sounds pretty good to us!
   And that's not all.In subjects，especially women，who performed the tests while sleep-deprived，the flavanols helped relieve the negative effects of the sleep deprivation.And there's even more good news.The researchers also found that eating chocolate daily （over periods ranging from five days to three months） produced noticeable long-term improvements in cognition.Older adults，whose memories were already declining，saw an especially significant improvement.
   All chocolate has flavanols，since they occur naturally in cocoa.However，dark chocolate lovers feel happy，because it has more flavanols than any other type of chocolate.In fact，the scientists themselves have claimed that，after doing this research，they've started eating dark chocolate every day!
   Now，we're not saying you should start eating chocolate for breakfast，lunch and dinner - it's still high in sugar and low in nutrients.But next time you find yourself yawning after a sleepless night，snack on some chocolate and let the flavanols work their magic.

（1）What does the underlined phrase in Paragraph 1 probably mean？
A．As much as possible.
B．For three meals.
C．In right amount.
D．Not in the least
（2）How does a student perform while learning after eating chocolate？
A．He memorizes less than before.
B．He can't concentrate on lessons in the slightest.
C．He becomes more excited.
D．He understands what the teacher says faster.
（3）According to the passage，if your memory fails，what should you do？
A．Eat chocolate as three meals.
B．Use chocolate as a daily snack.
C．Hunt for dark chocolate.
D．Ask a doctor for advice.
（4）What's the main idea of the passage？
A．Chocolate is a beneficial but unhealthy food.
B．Eating chocolate benefits our learning.
C．Eating chocolate works on your sleep.
D．Chocolate contains low nutrients.

共享时间:2021-04-22 难度:1 相似度:1.5

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204942. （2022•阎良区•高二下期末） Alcohol was the leading risk factor for disease and premature death in men and women between the ages of 15 and 49 worldwide in 2016，accounting for nearly one in ten deaths，according to a study published in The Lancet in 2018. "It has been known for decades that heavy drinking is bad for brain health，" said Sadie Boniface，head of research at the UK's Institute of Alcohol Studies.While there is no such thing as a "safe" level of drinking，with increased consumption of alcohol associated with poorer brain health，according to a recent study.
   In the observational study，researchers from the University of Oxford studied the relationship between the self-reported alcohol intake of some 25，000 people in the UK，and their brain scans.The researchers noted that drinking had an effect on the brain's gray matter—regions in the brain that make up "important bits where information is processed，" according to lead author Anya Topiwala，a senior clinical researcher at Oxford.
   "The more people drank，the less the volume of their gray matter，" Topiwala said via email. "Brain volume reduces with age and more severely with dementia （痴呆）.Smaller brain volume also predicts worse performance on memory testing，" she explained. "While alcohol only made a small contribution to this （0.8%），it was a greater contribution than other 'changeable' risk factors，" she said，explaining that changeable risk factors are "ones you can do something about，in contrast to aging."
   The team also investigated whether certain drinking patterns，beverage types and other health conditions made a difference to the impact of alcohol on brain health.They found that there was no "safe" level of drinking—meaning that consuming any amount of alcohol was worse than not drinking it.They also found no evidence that the type of drink—such as wine，spirits or beer—affected the harm done to the brain.
   However，certain characteristics，such as high blood pressure or obesity，could put people at higher risk，researchers added.So we shouldn't forget alcohol affects all parts of the body and there are multiple health risks.

（1）How was the observational study developed？
A．By comparing brain and health.
B．By comparing people and the researchers.
C．By comparing information and gray matter.
D．By comparing alcohol intake and brain scans.
（2）What is the result of the research？
A．Drinking wine have no impact on brain.
B．Drinking spirits have more impact on brain.
C．Drinking alcohol can cause reducing of brain volume.
D．Drinking alcohol can lead to obesity.
（3）Which of the following groups has a higher risk when drinking alcohol？
A．People drinking more types.
B．People with high blood pressure.
C．People selling the wine.
D．People with diabetes.
（4）What can be the best title for the passage？
A．Stay Away From Alcohol.
B．Lack of Sleep.
C．Consumer Health.
D．Keep-fit Exercise.

共享时间:2022-07-12 难度:1 相似度:1.5

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202282. （2022•西工大附中•七模） Innovation has pretty much finished with car tires （轮胎） right，I mean，what's left to change？How about the whole "air" part？
   Michelin Company's attempt to tackle tire rubbish around the world witnessed them roll out puncture-proof "airless" tires，which they say should help reduce the 18% of all world tires that are abandoned early due to punctures （轮胎漏气）.Deserted tires are a huge worldwide waste problem—the U.S.produces 260 million abandoned tires per year，many of which end up in landfills or on the sides of the freeway where they release harmful gases and micro-plastic pollutants as they break down.
   Michelin Company's Unique Puncture Proof Tire System or "UPTIS" is designed using 46% recycled material，and made from a plastic matrix （母体） mixed with glass fibers that provide a flexible outer layer with a strong inner one. "The truly distinctive structure of the Michelin UPTIS prototype（原型），or its "strangeness" as we have often heard it called，really attracted the eye of many visitors and left a lasting impression on them，" stated Cyrille Roget，Michelin Group Technical and Scientific Communications Director. "It was an unusual experience for us，and our greatest satisfaction came at the end of the demonstration when our passengers，who were undoubtedly a little alert（警觉）at first，said they felt no difference compared with conventional tires."
   Michelin Company believes airless tires will improve everyone's lives.Maintenance （保养） costs for company's vehicle fleets will be less expensive，and inexperienced car owners won't accidentally ruin their rubbers when driving them because they are over-or under-inflated（充气）.Although they are still in development stage and using at a large scale within years is unlikely to be available，Michelin Company is not in the least doubtful about their tires' future.

（1）Why does the author ask questions in the first paragraph？
A．To explain a strange phenomenon.
B．To clarify a difficult concept.
C．To present a well-known fact.
D．To introduce a new topic.
（2）What is the main idea of the second paragraph？
A．The new tire runs more smoothly.
B．The world greatly needs airless tires.
C．Traditional tires threaten the environment.
D．Michelin Company battles the issue of wasted tires.
（3）What do we know about "UPTIS"？
A．Its structure distances visitors.
B．It only uses recycled materials.
C．It combines plastic and glass fibers.
D．Its comfortableness beats ordinary tires.
（4）What's Michelin Company's attitude towards their new tires？
A．Tolerant.
B．Positive.
C．Mixed.
D．Objective.

共享时间:2022-06-09 难度:1 相似度:1.5

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204689. （2023•西安八十九中•高二上期末） OUCH!Shots hurt.But they prevent you from getting sick.How？By teaching your body how to fight germs （病菌）.Some vaccines （疫苗） contain germs of a specific disease that have either been killed or weakened，so the shots won't give you the disease.
   Quantities of white blood cells called "B cells" defend your body.Each one can recognize something that is not part of you.When a germ gets inside your body and meets its match，that B cell becomes active.It replicates itself，and thousands of B cells create "antibodies"，which attach to the germ and destroy it.
   One germ can turn into a million in a few hours.If you're weak，you will soon feel very sick.Meanwhile，your B cells are working hard and they will catch up with the growing numbers of germs in one or two weeks.At the height of the battle，B cells can make thousands of antibodies （抗体）in a second.That's when you start feeling better.
   After the germs are defeated，your body knows how to fight those specific germs because some B cells are memory B cells.Sometimes they can live for your entire life.They make you safe from a second infection （感染）.That fact is the basis for vaccination.Vaccines contain dead or weakened germs that let your body make memory B cells.If you later come across that same germ，memory B cells immediately start replicating themselves and making antibodies.Soon the germs are destroyed，and you probably won't even feel sick.
When Edward Jenner tried using cowpox to protect people from smallpox （天花），he had no idea about B cells or antibodies.Now we know that cowpox and smallpox are similar enough that the antibodies made against cowpox also kill the smallpox virus for a time.A hundred years after Jenner，Louis Pasteur formed the basis for vaccination：using a germ against itself.
（1）What does the underlined word "replicates" mean in the second paragraph？
A．Repairs.
B．Reproduces.
C．Replaces.
D．Recycles.
（2）People start feeling better after getting sick when        .
A．germs grow at a high speed
B．antibodies reach a high level
C．memory B cells come into being
D．B cells find the germ in your body
（3）What can we know about vaccines from the text？
A．Vaccineots may give people the disease.
B．Vaccines put antibodies in people's body.
C．Vaccines free people of various diseases.
D．Vaccines help people make memory B cells.
（4）Which of the following is the best title for the text？
A．How to Fight Germs.
B．What Are Vaccines.
C．How Vaccines Work.
D．Who Invented Vaccines.

共享时间:2023-02-23 难度:1 相似度:1.5

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202281. （2022•西工大附中•七模） It is not easy to excite New Yorkers or keep them going easy on things around.This is one reason why actors and other famous people move to the city.They can live quieter lives and escape the paparazzi photographers who would follow them in Hollywood.
   But New York has a new media star.And this star is not living so quietly.The star is a colorful Mandarin duck.The bird first appeared this month in a small body of water in Manhattan's Central Park.Large crowds have gathered to see the duck.Reporters have been following its every move.The media attention on the duck has earned the name "quackarazzi" – a word combination of paparazzi and the sound a duck makes!
   The duck has chosen to live in a costly part of New York -- just off Fifth Avenue，near the historic Plaza Hotel.There，hundreds of people turn up every day，hoping to see the bird show off its extremely colorful feathers.Many people like the duck because its colors are like "sunsets，" says New Yorker Joe Amato.He comes to the park nearly every day with his camera equipment.Bird lovers have been keeping record of the bird's daily life through social media postings and videos.People have noted how effortlessly the duck moves through the water.
   This week，New York's newest celebrity seemed to enjoy its fame，showing off its wings while members of the "quackarazzi" pushed each other to get a closer look.Leesa Beckmann traveled over two hours from her home in New Jersey to see the duck.She says her 90-year-old mother has been talking all about the duck since its first appearance.
   "I've got to see this...duck，" Beckmann told her mother.She plans to take pictures and give them to her mother.
   Bird expert Paul Sweet heads a large collection of bird species at the New York-based American Museum of Natural History.He says there is nothing special about a Mandarin duck in Central Park.Central Park Zoo has its own Mandarin duck，he says.These ducks are often imported to the United States from Asia for use on private property.
   "A lot of non-birders tend to see （colorful） birds as more beautiful，" Sweet said， "But to me，it's no more beautiful than，say，a sparrow."

（1）From the passage we can know
A．New Yorkers are always excited about new things.
B．A super star is giving a performance in Manhattan's Central Park.
C．Bird lovers are interested in recording the life of the new "guest".
D．Everyone agrees Mandarin duck is a new species.
（2）Many New Yorkers like the bird for the reason that         .
A．It's famous in Hollywood films.
B．It has a beautiful color and likes to show its wings.
C．They can take lots of pictures and sell for money.
D．They are lucky and precious.
（3）Paul Sweet may agree that        .
A．His mother will surely like the pictures of the birds.
B． "Quackarazzi" is a good name for the duck.
C．New Yorkers need to protect the new species.
D．Mandarin duck can be brought into America from other countries for use.
（4）Which of the following can be the best title？
A．Colorful Mandarin Duck Excites New Yorkers
B．Come and Meet Mandarin duck in Central Park
C．Mandarin Duck in Central Park---A Rare Species
D．A Most Beautiful Bird

共享时间:2022-06-09 难度:1 相似度:1.5

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dygzyyyn

2021-06-18

高中英语 | | 阅读理解

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