首页 > 试题列表 > 单题解析

202558. （2021•长安区•一模） Today we know Antarctica as an extreme environment containing ice and snow.But new research provides evidence that the area had a rainforest in the past.
   The researchers collected a piece of Earth sediment from under the seafloor off the coast of Antarctica.In the sediment，they discovered forest material that was estimated to be about 90 million years old.This would have been in the Cretaceous Period，when dinosaurs were the main land animals.The sediment was removed by scientists on the research icebreaker RV Polarstern in the Amundsen Sea near Pine Island Glacier.
   Johann Klages is a geologist with the Alfred Wegener Institute，Helmholtz Center for Polar and Marine Research in Germany.He was the lead writer of a study on the findings，published in the journal Nature.He said the sediment was collected from a depth of about 30 meters below the ocean floor.Klages said an examination showed that the material didn't form in the ocean.
   The researchers estimate that the area-about 900 kilometers from the South Pole-had average yearly temperatures of about 12 to 13 degrees Celsius.During the warmest summer months，average temperatures likely reached between 20 and 25 degrees Celsius.The soil included fine dirt particles and hard clay，as well as substances linked to at least 65 different kinds of plants，the study found.Klages added that the plants included trees，ferns and flowering plants.While no animal remains were found，Klages said there were likely dinosaurs，flying reptiles and many insects in the environment.
   The research represents new evidence of the major climate changes Earth has experienced in the past - and is currently undergoing today.The soil in the sediment dates back to the planet's warmest period of the past 140 million years，with sea level about 170 meters higher than today.The researchers said that the rainforest environment in Antarctica was especially surprising because each year，the area experiences a four-month polar night when there is no sunlight to fuel plant life.Klages said no ice sheets were present during the time，but seasonal snowfall was likely.

（1）How did the researchers reach their findings？
A．By exploring ice in Antarctica.
B．By analyzing the Earth sediment.
C．By collecting data on climate.
D．By researching special plants.
（2）What did the researchers say about the sediment？
A．Its material developed in the ocean.
B．It dates back to cold times in Antarctica.
C．Its material formed on the land.
D．It contained different animal remains.
（3）What does the author indicate in the last paragraph？
A．Antarctica's natural environment has changed greatly.
B．Polar nights in Antarctica are getting shorter than before.
C．There were ice sheets 140 million years ago.
D．Seasonal snowfall made the forest disappear.
（4）What is the main idea of the text？
A．Researchers study the secrets of Antarctica.
B．Antarctica had a different history of climate.
C．There's various wildlife in Antarctica.
D．Antarctica has an extreme environment containing ice and snow.

共享时间:2021-03-09 难度:2

纠错

下载

相似

组卷

[考点]

国家地理，说明文，

[答案]

BCAB

[解析]

（1）B.推理判断题。根据第一段中的"But new research provides evidence that the area had a rainforest in the past.但新的研究提供了证据，证明该地区过去有雨林。"和第二段中的"The researchers collected a piece of Earth sediment（沉淀物） from under the scafloor off the coast of Antarctica.In the sediment，they discovered forest material that was estimated to be about 90 million years old.研究人员收集了一块泥土沉积物（沉淀物）在南极洲海岸的海底。在沉积物中，他们发现了大约有9000万年历史的森林物质。"可知，研究人员从南极洲海岸的海床下收集到沉淀物，经过对该沉淀物的分析和研究得出结论。故答案为B.
（2）C.推理判断题。根据第二段可知，该沉淀物中含有森林物质；再根据第三段中的"Klages said an examination showed that the material didn't form in the ocean.克拉吉斯说，一项检查显示，这些物质不是在海洋中形成的。可知，该物质不是在海洋中形成的。再结合第四段中的"The soil included fine dirt particles（颗粒）..flowering plants.研究发现，这些土壤包括细土颗粒和硬粘土，以及与至少65种不同植物有关的物质。"可知，沉淀物是在南极洲的陆地上形成的。故答案为C.
（3）A.推理判断题。根据最后一段中的"The soil in the sediment dates back to the planet's warmest period of the past 140 million years，with sea level about 170 meters higher than today.沉积物中的土壤可以追溯到地球过去1.4亿年中最温暖的时期，海平面比今天高出约170米。可推测，南极洲的自然环境发生了很大的变化。故答案为A.
（4）B.主旨大意题。第一段是文章的主题段，介绍新的研究证明南极洲过去曾被雨林覆盖，其余段落均围绕该主题展开，由此可知，本文主要讲述的是南极洲曾经的气候跟现在的有很大不同。故答案为B.

[点评]

本题考查了"国家地理，说明文，"，属于"易错题"，熟悉题型是解题的关键。

转载声明：

本题解析属于发布者收集录入，如涉及版权请向平台申诉！！版权申诉

相似题 全部同步专题复习模拟真题联考专练月考周考期中期末单元寒假暑假副题

204203. （2023•长安区一中•高一上期末） A tiny Alaska village has experienced a boom in tourism in recent years as polar bears spend more time on land than on Arctic sea ice.
   More than 2，000 people visited the northern Alaska village of Kaktovik in 2018 to see polar bears in the wild.The far north community lies in an area where increasingly higher temperature has sped up the movement of sea ice，the primary habitat（栖息地）of polar bears.As ice has gradually moved to deep water beyond the continental shelf，more bears are remaining on land to look for food.
   Polar bears have always been a common sight on sea ice near Kaktovik，but villagers started noticing a change in the mid-1990s.More bears seemed to stay on land，and researchers began taking note of more female bears making homes in the snow on land instead of on the ice to raise their babies.U.S.Fish and Wildlife Service biologists began hearing reports of the increasing number of polar bears in the area in the early 2000s.As more attention was given to the plight（困境）of polar bears about a decade ago，more tourists started heading to Kaktovik.
   The village had fewer than 50 visitors annually before 2011，said Jennifer Reed，of the Arctic National Wildlife Refuge. "Today we're talking about hundreds and hundreds of visitors，many from around the world each year，" Reed said.Most tourists visit in the fall，when bears are forced toward land because sea ice is farthest away from the shore.Bruce Inglangasak，a local hunter who sometimes offers wildlife-viewing tours，said he's been offering polar bear tours since 2004.Most of his clients（客户）are from China and Europe，as well as from the lower 48 U.S.states.Many tourists stay several days in the village，which has two small hotels.The villagers have benefited a lot from that.In turn，they provide more effective protection for polar bears with financial support from tourism development.

（1）What causes more polar bears to stay on land in Kaktovik？
A．Food shortage.
B．Climate change.
C．Habitats' movement to shore.
D．Their preference for land.
（2）How did common people feel about more sight of bears on land？
A．Excited.
B．Puzzled.
C．Concerned.
D．Shocked.
（3）What can be inferred from the last paragraph？
A．Hotels in Kaktovik are in demand in autumn.
B．Kaktovik has about 50 visitors annually.
C．Inglangasak makes a living as a tour guide.
D．Tourism affects the balance of nature.
（4）Which saying can describe the text？
A．The fittest can survive.
B．After a storm comes a calm.
C．One man's fault is another man's lesson.
D．Every coin has two sides.

共享时间:2023-02-08 难度:2 相似度:2

解析

纠错

下载

组卷

204594. （2023•高新一中•高二下期末） When you think of a map，is north on the top or the bottom？Usually，maps are designed with north on top，though when we think about it，there s no logical reason for this bias.After all，there is no up or down in space.So what's wrong with south，east or west being on the top of the map？The answer is：nothing at all.In fact，north-up maps only became the norm in the last few hundred years.
   Ancient Egyptian maps had south at the top because the Nile River flows downhill from mountains in the south to the Mediterranean Sea in the north.Mecca was to the south of most early Muslim civilizations，and south-up maps were designed so that viewers would look up to see Mecca.Medieval Christian maps had east at the top，as they believed the Garden of Eden was in the east.The only early maps that had north at the top were those of early China because the emperor lived in the north.
   North seems to have settled at the top of maps during the 16th century，largely thanks to a Flemish mapmaker，Mercator.Mercator was a great admirer of an early Greek mapmaker，who，for reasons now unknown，put north at the top of maps，so Mercator did，too.When Mercator's world map became the standard map to navigate the oceans，north up became standard as well.
   What is the implication of this north-view of the world？Psychologically，people tend to think of up as good and down as bad.Just think of words and phrases like "upmarket"，"upbeat" and "moving up in the world"，and how they contrast with their opposites.Because north is so consistently put at the top of maps，people now think of north as good，too.
   Several attempts have been made in recent years by introducing south-up maps to the market.These maps not only give us a chance to see the world differently，but also give everyone the chance to see themselves on top.

（1）What can we learn from the first two paragraphs？
A．North-up maps were rare in ancient times.
B．Deciding up or down in space is ridiculous.
C．Mecca maps were based on a legend.
D．The south-up map first appeared in ancient Egypt.
（2）Why is north associated with good？
A．An illogical reason.
B．The spread of Mercator's maps.
C．People's preference for up.
D．An age-old tradition in Greece.
（3）What is the authors attitude to south-up maps？
A．Cautious.
B．Supportive.
C．Uncaring.
D．Disapproving.
（4）What's the main purpose of the text？
A．To explain a phenomenon.
B．To compare various facts.
C．To correct a cultural bias.
D．To argue for a viewpoint.

共享时间:2023-07-08 难度:2 相似度:2

解析

纠错

下载

组卷

202521. （2021•西安中学•二模） Plants：we eat them，juice them - and now it seems we can mine them too!
   After a successful experiment on the island of Borneo，the botany professor Alan Baker and a group of researchers want to introduce phytomining （harvesting minerals from plants） as a better，partial substitute for traditional mining.
   Phytomining，also known as agromining，means collecting metals from live plants.However，this can only be done with a group of plants known as "hyperaccumulators".There are around 700 identified types worldwide，and what makes these hyperaccumulators special is that they naturally attract and absorb minerals through their roots - metals poisonous to other plants - and then store huge，pure concentrations of these minerals in their bodies.The metals can then be extracted from the plants' sap（汁；液），oil，or sometimes even live tissue.
   Baker and his colleagues see a lot of potential in phytomining.Not only can it help meet the growing global demand for metals，but is a way of undoing some of that damage to the environment by traditional mining.
   One of the biggest problems with traditional mining is that it pollutes the surrounding area.Phytomining can extract metal waste，plus planting the hyperaccumulators would regrow the deforested areas caused by mining operations.Aside from this，if phytomining is able to replace part of traditional mining，then there would be fewer instances of bad mining practices like abandoned mines，which pollute the nearby waters.Also，since phytomining provides metals that are already naturally pure，there is no need to use huge amounts of energy to purify the ore（矿石）.
   Phytomining has its drawbacks.Harvesting plants on a large scale is expensive today，compared to traditional mining.Besides，plants can be wiped out by diseases or unexpected weather conditions.
   However，there are many reasons to consider phytomining.After all，we need to make sure that our planet can keep up and sustainable practices like phytomining give us the hope that our advancement doesn't mean sacrificing Mother Earth.

（1）What makes hyperaccumulators different from other plants？
A．The sap poisonous to other plants.
B．The ability to take in and store minerals.
C．The oil extracted from live plant tissue.
D．The concentrations of mineral in their bodies.
（2）What is the advantage of phytomining？
A．It can stop deforestation.
B．It may reduce the deserted mines.
C．It uses clean energy to purify the ore.
D．It can't be destroyed by diseases.
（3）What is the author's attitude toward phytomining？
A．Pessimistic.
B．Indifferent.
C．Optimistic.
D．Skeptical.
（4）What is the best title for the text？
A．Metals From Plants
B．The Future of Phytomining
C．What Are Hyperaccumulators？
D．Benefits of Phytomining

共享时间:2021-03-16 难度:2 相似度:2

解析

纠错

下载

组卷

201671. （2024•师大附中•八模） The most welcome sight on cold，wet winter night in London is the familiar shape of a London taxi cab approaching with its yellow "for hire" sign shining brightly.That shows it is ready to pick you up.Travelling by taxi in London is not just a way of going from one place to another.It is an experience to be enjoyed and remembered.
   The main reason for this is the drivers，who are called "cabbies".Many of them are true Cockneys.This means they were born in the heart of London and speak their own special dialect（方言）of English.All of them know every street and famous building in the city，and all of them love to talk.A simple twenty-minute Journey across town can become very interesting.You may have a discussion about the government and its leaders or a friendly talk about the driver's Aunty Nellie!One thing is for sure，it will never be boring.Cabbies know all the latest news about film stars，the Royal Family，government leaders，and popular singers or actors and actresses.They also know the best places to eat，shop and relax.And they can take you straight to any large hotel，department store，theatre or museum.They know the shortest way possible without even looking at a map，because everyone who wants to become a taxi driver must pass a very difficult examination in order to get a license to drive a taxi.The exam is called "The Knowledge." It is a written test，and in it drivers are asked the shortest way from one place to another.They must take into account the time of day-in-rush hour，longer route（路线）may be quicker-and describe the best way.Moreover they must never forget the one-way streets!

（1）From what can we tell that someone is a Cockney？
A．Their interest.
B．Their manners.
C．Their speech.
D．Their appearance.
（2）What does the author suggest by mentioning "Aunty Nellie" in paragraph 2？
A．Passengers are full of curiosity
B．Cabbies' topics are wide-ranging.
C．Aunty Nellie is popular in London.
D．Londoners are friendly to each other.
（3）What is the purpose of "The Knowledge"？
A．To qualify one to drive a taxi.
B．To assess one's driving skills.
C．To test drivers' ability to write.
D．To check taxi drivers memory.

共享时间:2024-06-19 难度:2 相似度:2

解析

纠错

下载

组卷

201758. （2024•西安中学•三模） When you think of a map，is north on the top or the bottom？Usually，maps are designed with north on top，though when we think about it，there s no logical reason for this bias.After all，there is no up or down in space.So what's wrong with south，east or west being on the top of the map？The answer is：nothing at all.In fact，north-up maps only became the norm in the last few hundred years.
   Ancient Egyptian maps had south at the top because the Nile River flows downhill from mountains in the south to the Mediterranean Sea in the north.Mecca was to the south of most early Muslim civilizations，and south-up maps were designed so that viewers would look up to see Mecca.Medieval Christian maps had east at the top，as they believed the Garden of Eden was in the east.The only early maps that had north at the top were those of early China because the emperor lived in the north.
   North seems to have settled at the top of maps during the 16th century，largely thanks to a Flemish mapmaker，Mercator.Mercator was a great admirer of an early Greek mapmaker，who，for reasons now unknown，put north at the top of maps，so Mercator did，too.When Mercator's world map became the standard map to navigate the oceans，north up became standard as well.
   What is the implication of this north-view of the world？Psychologically，people tend to think of up as good and down as bad.Just think of words and phrases like "upmarket"，"upbeat" and "moving up in the world"，and how they contrast with their opposites.Because north is so consistently put at the top of maps，people now think of north as good，too.
   Several attempts have been made in recent years by introducing south-up maps to the market.These maps not only give us a chance to see the world differently，but also give everyone the chance to see themselves on top.

（1）What can we learn from the first two paragraphs？
A．North-up maps were rare in ancient times.
B．Deciding up or down in space is ridiculous.
C．Mecca maps were based on a legend.
D．The south-up map first appeared in ancient Egypt.
（2）Why is north associated with good？
A．An illogical reason.
B．The spread of Mercator's maps.
C．People's preference for up.
D．An age-old tradition in Greece.
（3）What is the authors attitude to south-up maps？
A．Cautious.
B．Supportive.
C．Uncaring.
D．Disapproving.
（4）What's the main purpose of the text？
A．To explain a phenomenon.
B．To compare various facts.
C．To correct a cultural bias.
D．To argue for a viewpoint.

共享时间:2024-04-15 难度:2 相似度:2

解析

纠错

下载

组卷

202283. （2022•西工大附中•七模） In the town of Arras in northern France，the country's first-ever appointed official with Down syndromes is leading from the front，changing hearts and minds and bringing a new way of thinking about mental disability.
   In 2020，Eleonore Laloux was appointed municipal councilor（市议员）of Arras under the mayor Frederic Leturque，for which she has received continual praise for her colorful nature，her desire to make people smile，and for promoting the inclusivity（包容）of disabled persons in society.
   "Inclusion isn't something that we just think about；it's not a generous act.It's our duty，" Mayor Leturque told the Christian Science Monitor， "Eleonore has helped the entire town progress in terms of how we see disability."
   Along with holding down a part-time job at a hospital，a packed volunteer schedule，and a board position on Down Up，a non-profit organization her father launched to support community members with Down syndromes and their families，Laloux has made numerous adjustments to everyday community features in Arras to support disabled people；not only those with Down syndromes，but other forms as well.
   Arras' famous town center，town hall，and belfry（钟楼）are a UNESCO Heritage Site，and for those who can't go to the top，Laloux organized the creation of a virtual tour.Down below，crosswalk lights now sound off verbal instructions for those who can't see.She has also scheduled an "incluthon" for next summer，an event to inspire disabled people and the community at large through sports and culture.
   Perhaps unsurprisingly，this positive attitude has made her a very popular figure in her town and country，and she has made numerous television and other public appearances，including alongside many national politicians.But her appointment is by no means a gimmick to gain support from townspeople；she's made some brilliant changes in civil life.

（1）What can we learn from the mayor's words in Paragraph 3？
A．It's Eleonore's duty to help the disabled.
B．Accepting the disabled is a generous act.
C．Eleonore has changed people's views on the disabled.
D．The disabled deserve praise from all the townspeople.
（2）What is Paragraph 4 mainly about？
A．How Eleonore carries out her part-time job.
B．How Eleonore helped improve lives of the disabled.
C．What Eleonore did to run the non-profit organization.
D．What good proposals Eleonore made during her term.
（3）What does the underlined word "gimmick" in the last paragraph mean？
A．Trick
B．Promise
C．Challenges
D．Conclusion
（4）Which of the following words best describe Eleonore？
A．Committed and pioneering.
B．Ambitious and patient.
C．Creative and independent.
D．Honest and humorous.

共享时间:2022-06-09 难度:2 相似度:2

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

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

解析

纠错

下载

组卷

dygzyyyn

2021-03-09

高中英语 | | 阅读理解

下载量
浏览量
收益额

相关试卷 更多>>

2021年陕西省西安市长安区高考英语一模试卷

更新:2021-03-09 08:39浏览量:2

普通登录

手机登录

微信扫码立即登录