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202578. （2021•长安区•二模） Scientists have discovered an astonishing number of Antarctic blue whales in the waters off the coast of South Georgia，an island in the South Atlantic Ocean，suggesting decades of conservation efforts are paying off.
   During a 23-day survey，a team of researchers from the British Antarctic Survey（BAS） counted 55 animals.Dr.Trevor Branch，a scientist from the University of Washington，who specializes in studying blue whales，said the number was truly amazing.
   In the last century，Antarctic blue whales were nearly hunted to extinction for their blubber，a thick layer of fat that marine animals have under their skin to keep their bodies warm.Hunters used the blubber for oil to use in products like soap or fuel for oil lamps.Around South Australia，more than 33，000 whales are believed to have been killed.A hunting ban was introduced in 1966，but by that time the whales were critically endangered.In 2018 there were reported to be only around 3000 Antarctic blue whales left.
   These sightings by the BAS team，helped by scientists from the University of Auckland in New Zealand，are a positive sign that the population is increasing.
   "In a period of 40 or 50 years，I only had records for two sightings of blue whales around South Georgia，" Dr.Branch told the reporter. "So to go from basically nothing to 55 in one year is astonishing." The cold water around South Georgia has always been popular with whales because it is crowded with krill，tiny shrimp-like creatures that are the whales' favorite food.
   The high count was so unusual that other scientists wondered whether it was a one-off，perhaps caused by usually high number of krill temporarily attracting whales from other areas.However，Dr.Jennifer Jackson from BAS says the quantity of krill was no different from other years.She's confident the population growth shown in the recordings is real and down to the protection that the whales now have.This remains to be seen，but it is highly suggested that when the next assessment is released，most likely at the end of 2021，it could show a further increase in the number of Antarctic blue whales.With the comeback of the whale，this could be an inspiration for environmental campaigns that still have progress to make.

（1）Para.3 is mainly about       .
A．the danger that blue whales faced.
B．the efforts to save blue whales.
C．the importance of blue whales.
D．the effect of the hunting ban.
（2）What can we infer about the blue whales from the passage？
A．They will not be endangered in the near future.
B．The number of them rises because their food increases.
C．More conservation activities will be held to protect them.
D．The coast of South Georgia offered them suitable temperature.
（3）As for other scientists' opinion on the high count，Dr.Jennifer Jackson is       .
A．supportive
B．disapproving
C．fearful
D．uncertain
（4）What is the best title of the passage？
A．Blue Whales Makes Surprise Comeback
B．An Amazing Secret of Blue Whales
C．The Best Way to Protect Blue Whales
D．Blue Whales Set New Trends in Conservation

共享时间:2021-03-21 难度:2

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说明文，推理判断，

[答案]

ACBB

[解析]

（1）A.段落大意题。根据第三段"In the last century，Antarctic blue whales were nearly hunted to extinction for their blubber，a thick layer of fat that marine animals have under their skin to keep their bodies warm.Hunters used the blubber for oil to use in products like soap or fuel for oil lamps.Around South Australia，more than 33000 whales are believed to have been killed.A hunting ban was introduced in 1966，but by that time the whales were critically endangered.In 2018 there were reported to be only around 3000 Antarctic blue whales left.（在上个世纪，南极蓝鲸因其鲸脂而几近灭绝。鲸脂是海洋动物皮下用来保暖的一层厚厚的脂肪。猎人用鲸脂作为油，用于制作肥皂或油灯燃料等产品。在南澳大利亚，超过33000头鲸鱼被捕杀。1966 年开始禁止捕杀鲸鱼，但那时鲸鱼已经濒临灭绝。据报道，2018 年南极蓝鲸只剩下约3000头）可知，第3段主要是关于蓝鲸曾经所面临的危险。故选A.
（2）C.推理判断题。根据最后一段中"She's confident the population growth shown in the recordings is suggested that when the next assessment is released，most likely at the end of 2021，it could show a further increase in the number of Antarctic blue whales.With the comeback of the whale，this could be an inspiration for environmental campaigns that still have progress to make.（她相信，记录中显示的数量增长是真实的，而且归功于鲸鱼现在受到的保护。这还有待观察，但强烈建议，当下一次评估发布时，很可能是在2021年底，它可能会显示南极蓝鲸的数量进一步增加。随着鲸鱼的回归，这可能会对仍有进展的环保运动有所启发）可推知，将会举行更多的保护活动来保护蓝鲸。故选C.
（3）B.推理判断题。根据最后一段中"The high count was so unusual that other scientists wondered whether it was a one﹣off，perhaps caused by usually high number of krill temporarily attracting whales from other areas.However，Dr.Jennifer Jackson from BAS says the quantity of krill was no different from other years.（这种高计数是如此不寻常，以至于其他科学家怀疑这是否是一次性的，也许是由于通常大量的磷虾临时捕杀其他地区的鲸鱼造成的。然而，BAS的詹妮弗•杰克逊博士说，磷虾的数量与其他年份没有什么不同。）可推知，Jennifer Jackson 博士对其他科学家的看法表示反对。A.supportive支持的；B.disapproving不赞成的；C.fearful可怕的；D.uncertain不确定的。故选B.
（4）B.标题归纳题。根据第一段"Scientists have discovered an astonishing number of Antarctic blue whales in the waters off the coast of South Georgia，an island in the South Atlantic Ocean，suggesting decades of conservation efforts are paying off.（科学家在南大西洋的南乔治亚岛附近海域发现数量惊人的南极蓝鲸，这表明数十年的保护努力正在取得成效）结合文章主要说明了蓝鲸曾经所面临的危险，以及研究人员对这一现象的看法。可知，故B选项"蓝鲸数量出人意料地有所恢复"最符合文章标题。故选B。

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202938. （2017•师大附中•十一模） When I first got an email account ten years ago，I received communications only from family，friends，and colleagues．Now it seems that every time I check my e-mail，I have an endless series of advertisement and other correspondence that do not interest the at all．If we want e-mail to continue to be useful，we need special laws that make spamming（发送垃圾邮件） a crime．
   If lawmakers do not do something soon to prohibit spam，the problem will certainly get much worse．Computer programs allow spammers to spend hundreds of millions of e-mails almost instantly．As more and more advertisers turn to spam to sell their products，individual（个人的）e-mail boxes are often flooded with spam e-mails．Would people continue to use e-mail if they had to deal with an annoying amount of spam each time？
   This problem is troubling for individuals and companies as well．Many spam emails contain computer viruses that can shut down the entire network of a company．Companies rely on e-mail on for their employees to communicate with each other．Spam frequently causes failures in their local communications networks，and their employees are thus unable to communicate effectively．Such a situation results in a loss of productivity and requires companies to repeatedly repair their networks．These computer problems raise production costs of companies，which are，in the end，passed on to the consumer．
   For these reasons，I believe that lawmakers need to legislate （立法） against spam．Spammerould be fined，and perhaps sent to prison if they continue to disturb people．E-mail is a tool which helps people all over the world to communicate conveniently，but spam is destroying this convenience．

（1）What does the underlined word"correspondence"in the Paragraph 1 probably mean？
A．messages
B．ideas
C．connections
D．programs
（2）According to the text，what is the major cause of the flooding spam？
A．Companies rely on e-mail for communications．
B．More people in the world communicate by e-mail．
C．Many computer viruses contain spam e-mail．
D．More advertisers begin to promote sales through spam．
（3）According to Paragraph 3，who is the final victim of spam？
A．The business
B．The advertiser
C．The employee
D．The consumer
（4）What is the purpose of the text？
A．To inform
B．To educate
C．To persuade
D．To instruct

共享时间:2017-07-14 难度:3 相似度:1.67

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206073. （2016•七十中•高二下期末） No one can change the weather．Nobody can control the weather．But if we read correctly the signs around us，we can tell what the more important changes in the weather will be．This way of telling what the weather will be like on the following day or two is called weather forecasting．
For many centuries and in all countries，people have studied the weather and tried to make weather forecasting．Rings around the sun are a sign of coming rain．That many people feel their joints（关节） hurt is a sign of wet weather．Some birds fly high if the weather is fine，but they fly near the ground if rainy or stormy weather is on the way．If you see a rainbow during rainy weather，this is a sign that the weather will become clear and fine．Such rainbows come in the evening．If the stars twinkle clearly at night，then fine weather will continue．If a fog appears in the morning just above a river，then the day will be warm．If the sunset is mostly red in color，then the following day will be fine．If a rainbow appears in the morning，rainy weather will probably come．
Most of the above sayings have been made by the people who have used their eyes and brains to make weather forecasting．
（1）Which is true about weather forecasting？
A．Weather forecasting is a way of telling what the weather will be like．
B．Weather forecasting is a report about the weather．
C．Weather forecasting is a sign of coming rain．
D．People can change the weather forecasting．
（2）Which of the following can be used here to replace the underlined phrase"on the way"？
A．continuing
B．reducing．
C．coming．
D．disappearing．
（3）Which of the following signs can tell the weather will probably be rainy？
A．Some birds fly high．
B．A rainbow appears in the morning．
C．The sunset is mostly red in color．
D．Fogs appear in the morning just above a river．
（4）The best title of the passage is       ．
A．Weather forecasting plays an important role in our life
B．Weather forecasting can bring people some signs of weather
C．Weather is forecasted only by eyes and brains．
D．People can predict weather by experience in daily life．

共享时间:2016-07-21 难度:1 相似度:1.5

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203516. （2015•西工大附中•八模） Do you find getting up in the morning so difficult that it's painful？This might be called laziness，but Dr．Kleitman has a new explanation．He has proved that everyone has a daily energy cycle．
   During the hours when you labour through your work，you may say that you're"hot"．That's true．The time of day when you feel most energetic is when your cycle of body temperature is at its peak．For some people that peak comes during the forenoon．For others it comes in the afternoon or evening．No one has discovered why this is so，but it leads to such familiar monologues（自言自语）as"Get up，John!You'll be late for work again!"The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening．Much family quarrelling ends when husbands and wives realize what these energy cycles mean，and which cycle each member of the family has．
   You can't change your energy cycle，but you can make your life fit it better．Habit can help．Dr．Kleitman believes．Maybe you're sleepy in the evening but feel you must stay up late anyway．Counteract your cycle to some extent by habitually staying up later than you want to．If your energy is low in the morning but you have an important job to do early in the day，rise before your usual hour．This won't change your cycle，but you'll get up energy and work better at your low point．
   Get off to a slow start which saves your energy．Get up with a yawn and stretch．Sit on the edge of the bed a minute before putting your feet on the floor．Avoid the troublesome search for clean clothes by laying them out the night before．Whenever possible，do routine work in the afternoon and save tasks requiring more energy for your sharper hours．

（1）If you want to work better at your low point in the morning，you should       ．
A．change your energy cycle
B．overcome your laziness
C．get up earlier than usual
D．go to bed earlier
（2）You are advised to rise with a yawn and stretch because it will       ．
A．help to keep your energy for the day's work
B．help you to control your temper early in the day
C．enable you to get your energy on your routine work
D．keep your energy cycle under control all day
（3）What's the best title of the passage？
A．Change Your Habits
B．Save Your Energy
C．Daily Energy Cycle
D．Temperature-and-Energy Peak
（4）The text is likely to be selected from a book of       ．
A．fashion
B．geography
C．environment
D．Science

共享时间:2015-06-19 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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204497. （2023•蓝田县•高二下期末） Fast walkers may live longer than dawdlers （缓慢的人）— regardless of their weight，a new study suggests.
    Researchers at Leicester University analyzed data on 474，919 people with an average age of 52 in the UK Biobank between 2006 and 2016.They found women who walked briskly had a life expectancy of 86.7 to 87.8 years old，and men who kept up the pace had a life expectancy of 85.2 to 86.8.Slow walkers hadn't much encouraging prospects （前景）：women had a life expectancy of 72.4，and men of 64.8 years old，if they were more leisurely in their movements.According to the paper，published last week，that ratio held true even if the fast walkers were severely overweight.It does not necessarily mean fast walkers will live longer.Experts say it suggests walking speed could be a simple way for doctors to judge their patients' general health alongside other tests.
   It is hardly the first study holding up walking speed as a powerful evidence that appears to improve and determine our health.
   In 2011，the Journal of the American Medical Association （JAMA） published a study by Stephanie Studenski，who found the same：walking speed was a reliable predictor of life expectancy.
   In 2013，US researchers found walking pace was linked to lower heart disease risk and longer life expectancy.In 2018，a study from the University of Sydney found picking up your walking pace to even an "average speed" could cut your risk of premature death by a fifth.
   And Tom Yates，the physical activity professor at Leicester who's behind the latest study，has been publishing findings on this connection for years.
   In 2017，he analyzed the same UK Biobank data and found walking speed appeared to affect the risk of dying from heart disease — concluding that the slowest walkers were twice as likely to suffer a heart-related death compared to quick walkers.

（1）What does the underlined word "briskly" in paragraph 2 probably mean？
A．Casually.
B．Quickly.
C．Actively.
D．Energetically.
（2）What does the paper published last week show？
A．Most fast walkers are overweight.
B．Fast walkers have a simple way of living.
C．Walking speed can help doctors know about their patients' general health.
D．Doctors will surely have better ways to cure their patients of their illness.
（3）What did US researchers find？
A．Walking slowly is bad for people's health.
B．Walking speed can predict a person's life expectancy.
C．People won't die early by increasing their walking pace.
D．Lower heart disease risk is determined partly by walking pace.
（4）What's the best title for the text？
A．Fast Walkers May Have a Long Life Expectancy
B．Life Expectancy Is Determined by Exercise
C．Researchers Try to Improve Life Expectancy
D．The Public Doubt Researches on Walking Speed

共享时间:2023-07-05 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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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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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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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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204422. （2023•铁一中学•高二上期末） As the climate warms，birds are shrinking and their wingspans are growing，according to a new study.Researchers analyzed 70，716 birds from 52 kinds of North American migratory（迁徙的）bird species collected over 40 years.The authors say the study is the largest of its kind and that the findings are important to understanding how animals will adapt to climate change.
   "We found almost all of the species were getting smaller." said lead author Brian Weeks，an assistant professor at the University of Michigan.
   "The species were pretty diverse，but responding in a similar wav." he said. "The consistency waocking."
   He said studies of animal responses to climate change often focus on shifts in geographical range or timing of life events，like migration and birth.But this study suggests body morphology（形态）is a crucial third aspect.
   "That's one major implication，" he said， "It's hard to understand how birds will adapt without taking all three of these things into consideration."
   The findingowed that from 1978 to 2016，the length of the birds' lower leg bone shortened by 2.4%.Over the same time，the wings lengthened by 1.3%.
   The evidence suggests warming temperatures caused the decrease in body size，which in turn caused the increase in wing length.
   "Migration is an incredibly taxing thing they do，" Mr.Weeks said，explaining that the smaller body size means less energy available for the birds to complete their long journeys.
   He says the birds most likely to survive migration were the ones with longer wingspans and smaller bodies.
   The scientists aren't exactly sure why warmer temperatures cause birds to shrink.One theory is that smaller animals are better at cooling off，losing body heat more quickly.

（1）What's the best title for the text？
A．All of the Birds Are Getting Smaller
B．Animals Are Adapting to Climate Change
C．Climate Change Is Causing Birds to Shrink
D．Scientists Are Finding Causes of Warm Climate
（2）What made Brian Weeks feel astonished？
A．It took 40 years to collect 70，716 birds from North America.
B．Many birds are shrinking when responding to the climate change.
C．All migratory bird species were collected to do the important research.
D．So many researchers take part in the largest study to work out the findings.
（3）What does the underlined word "taxing" most probably mean？
A．Tiring.
B．Important
C．Easy.
D．Pleasant
（4）What can we infer from the last paragraph？
A．The migratory birds aren't big.
B．The temperatures will be higher.
C．The scientists will go on further study.
D．The smaller animals will surely live longer.

共享时间:2023-02-10 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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204981. （2022•铁路中学•高二上期末） A device that stops drivers from falling asleep at the wheel is about to undergo testing at Department of Transport laboratories and could go on sale within 12 months.
   The system，called Driver Alert，aims to reduce deadly road accidents by 20%-40% that are caused by tiredness.Airline pilots can also use it to reduce the 30% of all pilot-error accidents that are related to fatigue.
   Driver Alert is based on a computerized wristband（腕带）.The device，worn by drivers or pilots gives out a sound about every four minutes during a car journey.After each sound the driver must respond by squeezing the steering wheel（方向盘）.A sensor in the wristband detects this pressing action and measures the time between the sound and the driver's response.
   Tiredness is directly related to a driver's response time.Usually，a watchful driver would use about 400 milliseconds to respond，but once that falls to more than 500 milliseconds，it suggests that the driver is getting sleepy.
   In such cases the device gives out more regular and louder sounds，showing that the driver should open a window or stop for a rest.If the driver's response continues to slow down，the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.
   The device has been delivered to the department's laboratories for testing.If these tests，scheduled for six months' time，are successful，the makers will bring the product to market within about a year.

（1）Driver Alert is a device that can         .
A．keep drivers asleep
B．change drivers' response accuracy
C．reduce the possibility of accidents
D．protect drivers when accidents happen
（2）What does the underlined word "fatigue" in Paragraph 2 mean？
A．Illness.
B．Tiredness.
C．Carelessness.
D．Impoliteness.
（3）How does Driver Alert work？
A．By being used as a nonstop alarm all the time.
B．By squeezing the steering wheel on the way.
C．By reminding or warning drivers if necessary.
D．By being worn on drivers' hands every moment.
（4）What do we know about Driver Alert？
A．It must be fixed on the driver's cars.
B．It aims to prevent drivers from sleeping.
C．It has gone through testing at laboratories.
D．It isn't available to drivers at the moment.

共享时间:2022-02-07 难度:1 相似度:1.5

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2021-03-21

高中英语 | | 阅读理解

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