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Unit3 Our digital lives
单元话题阅读理解练习
学校:___________姓名：___________班级：___________考号：___________
一、阅读理解
（24-25八年级上·广东深圳·期末）Do you like writing by hand or with a keyboard A new brain study at Norwegian University of Science and Technology shows that choosing handwriting instead of using a keyboard results in better learning and memory.
“When you write your shopping list or class notes by hand, you simply remember what you wrote better later,” said Audrey van der Meer, who did the study.
12 young grown-ups and 12 children took part in the study. Special machines were used to follow and record brain wave activities. Each person wore a special cap with over 250 electrodes (极) on the head, and was asked to write by hand and use a keyboard. The sensors in the electrodes picked up the activities that took place in the brain. Each examination took 45 minutes for each person.
The results showed that the brain in both young grown-ups and children was much more active when writing by hand than when using a keyboard. According to Van der Meer, plenty of senses become active by holding a pen and putting it down on paper, seeing the letters written and hearing the sound made while writing. These build connection between different parts of the brain, opening the brain up for learning.
Van der Meer believes that the results let us know the importance of children being asked to draw and write at an early age, “Learning to write by hand is a slower course, but it’s important for children to experience the tiring step of learning to write by hand,” she said.
The hand movements used to form the shapes of letters are helpful in several ways. “If you use a keyboard, you use the same movement for each letter. Writing by hand needs control of your fine motor (精细动作) skills and senses. It’s important to put the brain in a learning condition as often as possible,” Van der Meer added, For example, you might use a keyboard to write an article, but you should take notes by hand during a class.
1．Which is the correct order of the study
①Record and study the results.
②Put a special cap on each person.
③Find 12 young grown-ups and 12 children.
④Ask the people to write by hand and use a keyboard.
A．②④①③ B．③②④① C．③④②① D．②①④③
2．What is the result of the study
A．The brain is more active when writing by hand than when using a keyboard.
B．You can remember what you write better if you use a keyboard.
C．Fewer people choose handwriting and more people use a keyboard.
D．It is easier to put your brain in a learning condition when you use a keyboard.
3．What does the underlined word “These” refer to
A．The letters you are learning to write,
B．The skills you use to write an article.
C．The sense experiences when you write by hand.
D．The different parts of the brain relative to writing.
4．From the passage, we can know that ________.
A．Students who only write by hand from an early age will get better grades in the future.
B．Students should completely use handwriting instead of using keyboards to finish their tasks.
C．Taking regular handwriting exercises will improve students’ learning abilities in the long run.
D．The study findings suggest that the earlier students start using keyboards, the more developed their fine motor skills will be.
5．Which of the following best shows the structure of the passage
A．①/②③④/⑤⑥ B．①②/③④⑤/⑥
C．①/②③/④⑤⑥ D．①②/③④/⑤⑥
（24-25八年级上·广东深圳·期中）Scientists say they have had a “conversation” with a humpback whale (座头鲸). The scientists are from the University of California, the Alaska Whale Foundation and the SETI Institute (Search for Extraterrestrial Intelligence Institute 搜寻地球外文明研究所). They teamed up and spoke to a humpback whale named Twain. They spoke to her in “humpback language” for 20 minutes. Their conversation took place after the scientists sent a “contact call” into the ocean off the coast of Alaska. Twain heard the call and responded (回应). She swam to the research boat, circled it and chatted. The SETI Institute said it was the first ever communication between humans and a humpback whale.
The scientists said their conversation with Twain was not a deep one. Professor Brenda Mc Cowan said it was more like a series of greetings. Whales use contact calls to let other whales know where they are. The scientists made the same call 36 times over a 20-minute period. Each time, Twain responded by calling back. She even matched the intervals (间隔) between each call that the researchers made, which greatly surprised the scientists.
Professor Brenda Mc Cowan told the Business Insider website that this research could make it easier to talk to aliens (外星人). She said, “There are many kinds of intelligent beings on this planet. By studying them, we can better understand what aliens might be like.” Based on this research, scientists may identify calls from space and make first contact with aliens in the future.
6．Where did the “conversation” take place
A．In the SETI Institute
B．In the Alaska Whale Foundation.
C．In the ocean off the coast of Alaska.
D．In the University of California.
7．Which of the following is TRUE about Twain
A．Twain was in poor condition.
B．Twain jumped out of the water 36 times.
C．Twain responded to the scientist’s call 20 times.
D．Twain was so smart that the scientists all felt surprised.
8．What can we learn from the last paragraph
A．Scientists have received calls from space.
B．There are few intelligent beings on Earth.
C．This research may help humans contact aliens.
D．People can talk with other animals in the future.
9．Which question is answered in this passage
A．Why do the scientists want to search for aliens
B．How many scientists took part in the research
C．What will people do to protect humpback whales
D．How did the scientists have a “conversation” with Twain
10．Where is the passage possibly from
A．A travel guide. B．A health report.
C．A storybook. D．A science magazine.
（24-25八年级上·广东深圳·期中）Have you heard of a cloud forest Is it the same as a rainforest Actually, it’s a very special kind of forest in cloudy mountains. There, clouds brush through trees and wet their leaves. Rain falls almost every day. Hundreds of mosses (苔藓) grow and cover everything like a soft, green coat.
Plants of cloud forests live in an unusual way. They grow on the branches of trees instead of on the ground. The air is very damp, so plants can get all the water they need from the fog and rain. They live on the high parts of trees so that they can get more light to be stronger.
There are many kinds of special animals in cloud forests. For example, tree kangaroos live in trees like monkeys. They use their long tails to balance just as monkeys do. Frogs have suckers (吸盘) on their toes so they can climb up trees and cross leaves easily. Many other special animals are waiting for us to discover, aren’t they
Cloud forests are important to people. They give us healthy food crops, such as wild beans, peppers, tomatoes, potatoes and strawberries. Furthermore, they offer new medicine to treat cancer. Unluckily, the beautiful forests are in danger now. Why Firstly, the climate is getting warmer, but plants and animals in cloud forests like to live where it’s cool. It’s difficult for them to find a proper place to live in. Secondly, people cut down many trees to plant crops or feed cows. The animals are losing their homes.
Once cloud forests are gone, there must be a huge loss to humans. Save the cloud forests before it’s too late!
11．What kind of weather can be expected in a cloud forest
A．It rains almost every day. B．It is always sunny. C．It is very windy. D．It is very cold.
12．What does the underlined word “damp” mean in paragraph 2
A．Dry. B．Sunny. C．Wet. D．Snowy.
13．According to the passage, many things live in cloud forests, including ________.
①mosses ②blueberries ③frogs with suckers ④monkeys ⑤tree kangaroos
A．①②③ B．①③⑤ C．②④⑤ D．③④⑤
14．Which of the following is TRUE according to the passage
A．We can use healthy food crops to make medicine for headache.
B．Hundreds of mosses grow because it’s always sunny in cloud forests.
C．The animals are losing their homes because people cut down many trees.
D．Plants need more water to be strong so they grow on the high parts of trees.
15．What’s the main purpose of this passage
A．To save the cloud forests. B．To introduce plants in cloud forests.
C．To describe the cloud forests. D．To discover animals in cloud forests.
（24-25八年级上·广东深圳·期中）Each number is special and has its own beauty. They are basic elements (元素) of mathematics for counting, measuring, and solving equations (方程). Numbers hold a lot of fun facts and stories. Today, we invite you on a journey through some of them.
Zero
The ancient Babylonians (巴比伦人) invented zero, and it is the greatest number in the world. It was the age of Henry VI (亨利六世) when he became King of England (he was nine months old) . Also when he became King of France (he was eleven months old). It’s the total number of snakes in Ireland (because of the cooler and wetter environment).
Three
Three is a creepy number in some cultures. In Vietnam, it’s bad luck to have three people in a photo as the one in the middle might die. It’s the number of people who have been to the bottom of the ocean (the Mariana Trench). It’s (on average) the number of days you can survive without water, the number of weeks you can survive without eating and the number of minutes you can survive without taking a breath.
Seven
Ah, Number Seven. It’s seen as lucky or mystical (神秘的) in some cultures. It appears all the time. Seven days of the week. Seven ancient wonders. Seven Dwarves too. It’s the estimated (估计) number of Northern white rhinos left in the world.
Ten
Human children need around 10 hours of sleep a night (you’d need two hours if you were a giraffe and twenty-two hours if you were a koala). 10 percent of the world is left-handed. The world’s largest omelette (煎蛋) was 10 metres wide. 10 percent of people in the world live on islands.
16．What can people use numbers to do EXCEPT
A．To count. B．To measure. C．To solve equations. D．To go traveling
17．How old was Henry VI when he became King of England
A．One year old. B．Eleven months old. C．Nine months old. D．Six months old.
18．What can we know about Three and Seven
A．Three is unlucky in some cultures. B．Seven is bad luck in Vietnam.
C．Seven sometimes appear in our lives. D．People can survive 3 weeks without water.
19．How much sleep does a child need every night
A．22 hours B．10 hours C．8 hours D．2 hours
20．Where can we probably read this article
A．In a health magazine B．In a sports newspaper C．In a Maths blog D．In a travel guide
（23-24八年级上·广东深圳·期中）Our skin might be tougher than you might think, as it can heal (修复) itself repeatedly over time. Scientists have made a new material that is as tough as human skin. This electronic skin can heal itself more than 5,000 times!
Scientists from Saudi Arabia made the new “e-skin”. In fact, e-skin is not something new. Scientists have made e-skin before to help repair human skin and to make prosthetic (假肢的) arms and legs. But other kinds of e-skin are usually not very stretchy (可延展的), so they break easily. They are also not as sensitive (敏感的) as real skin.
However, the new e-skin has solved these problems. Scientists used a hydrogel (水凝胶) to make the e-skin, which makes it very stretchy. Then they put a layer of sensors (传感器) on the hydrogel. These sensors can respond (反应) in less than 0.1 seconds and sense things from 20cm away.
When used in humans, the new e-skin can get medical information, such as someone’s blood pressure (血压). But the scientists hope for a future for this technology that is “beyond biology”. It could be used to build soft robotics (机器人), aircraft and even furniture one day.
21．Scientists made e-skin before in order to ________.
A．repair human skin and make prosthetic arms and legs
B．reduce the cost of using human skin
C．replace human skin
D．measure human’s blood pressure
22．Which is NOT the problem that the old e-skin has
A．It can break easily. B．It is not sensitive.
C．It is expensive. D．It is not very stretchy.
23．How can e-skin be more sensitive, which is the right order
①The sensors on the skin responded.
②Scientists put a layer of sensors on the hydrogel.
③Scientists used a hydrogel to make the e-skin.
A．②①③ B．③②① C．②③① D．③①②
24．Which field has the e-skin already been used
A．Medical care. B．Aircraft. C．Furniture. D．Robot technology.
25．In which part of the newspaper can we see the passage
A．Business. B．Environment. C．Person. D．Technology.
（24-25八年级上·广东广州·期中）“Dreams may be more important than sleep. We all need dreams.” Some scientists say. Dreams take up about one quarter of our sleeping time. People have a few dreams each night.
Dreams are like short films. They are usually in colour. Some dreams are like old films. They come to us over and over again. That may be because the dreamers think about something all the time. Dreaming may be a way of trying to find an answer.
Some people get new ideas about their work from dreams. They may think about their work all day. These ideas can be carried over into dreams.
Sometimes we wake up with a good feeling from a dream. But often we can’t remember the dream. Dreams can go away quickly.
Too much dreaming cannot be good. The more we sleep, the longer we dream. The mind is hard at work when we dream. That is why we may have a long sleep and still wake up tired.
26．Dreams and films are usually ________.
A．very long B．in colour C．about work D．very sad
27．Why do some people often dream about their work Because they ________.
A．are tired in the daytime B．aren’t interested in their work
C．have too much work to do D．may think about their work all day
28．Which of the following is NOT true
A．Dreams may be helpful to some people sometimes.
B．Too much dreaming may be bad for people.
C．People always remember their dreams quickly.
D．People sometimes wake up tired if they have a lot of dreams.
29．The story mainly tells us ________.
A．what dreams are B．people like sleep
C．dreams are like films D．we always remember dreams
（24-25八年级上·广东广州·期中）We sometimes say the lion is “the king of the forest” because it is stronger and more dangerous than the other animals. It can run faster than most other animals and it can hunt other beasts. It is said that the lion is the highest animal in the land food chain (链). In the sea, people say the shark is at the top of the food chain. It can swim faster than most of the other sea animals. It can also use its sharp teeth to catch other sea animals and eat them.
What is at the top of the world’s food chain Human beings! We are not the biggest or fastest, but we are the cleverest. We could not run faster than most animals, so we invented cars. We could not fight better than a lion, we invented guns.
People’s inventions are clever, but they can be dangerous, too. For example, people used guns to kill a lot of wild wolves. People thought they posed a threat to their sheep. But m recent years, the number of wild rabbits is becoming larger and larger because the number of wild wolves is getting smaller and smaller. The wild rabbits competed for the grass with the sheep and the cows, much of the grassland became desert because it was seriously destroyed by the wild rabbits.
Remember that we are part of the food chain, so we are in danger. too! Protecting animals is protecting ourselves!
30．________ is at the top of the food chain in the sea.
A．The shark B．The lion C．Human beings D．The dolphin
31．People’s inventions can be sometimes dangerous because ________.
A．they can kill a lot of wild wolves
B．they can destroy the food chain
C．they can destroy the grassland
D．they can make wild rabbits grow bigger and bigger
32．What does the underlined word “threat” refer to
A．猎物 B．威胁 C．同类 D．契机
33．What’s the purpose of this passage
A．To tell people who is at the top of the food chain.
B．To discuss why human beings invented cars and guns.
C．To show the importance of wild wolves.
D．To make us pay more attention to what we do to the animals.
（24-25八年级上·广东广州·期中）
Eleven and TwelveThe number “eleven” comes from the German word “ainlif”, which means “one left” in English. Twelve follows the same rule. It comes from “twalif” — “two left”. Why did people use “teen” instead of “lif” from 13 to 19 We still don’t know.
42.195 Kilometres in a Marathon (马拉松)The story began with an ancient Greek soldier, Pheidippides. Once his country won a big war (战争) and he carried the good news from Marathon to Athens (雅典). He ran so fast that he died after telling people the news. To remember Pheidippides, the first modern marathon in the first Olympic Games started in 1896. It was about 40 km from Marathon to Athens. But people for the 1908 Olympic Games in London wanted to add something different. They made it 42.195 km. And since 1924, the number 42.195 has been kept in marathon.
28 Days in FebruaryBefore the calendar (历法) we use today, one of the first Roman calendars had only 304 days and ten months (March through December), with six months of 30 days and four of 31 days. The second king of Rome changed the old calendar. He added 50 days for January and February. To make the new months longer, he took one day from each of the 30-day months, and then made 56 days to divide between January and February (28 days each). Later January was given one more day to add up to 355 days a year, but February still had 28 days. That’s how it became the shortest month.
34．Which language do eleven and twelve come from
A．English. B．German. C．French. D．Russian.
35．The marathon became longer at London Olympic Games because ______.
A．the British was bad at Maths B．the British didn’t like the Greek story
C．the British wanted to run longer D．the British wanted to make it different
36．What can we know from the passage
A．People have found out why 13—19 didn’t follow the rule of twelve.
B．There used to be 340 days a year in the first Roman calendars.
C．Pheidippides ran from Marathon to Athens to carry the good news.
D．February has become the longest month in a year.
37．What is the purpose (目的) of the passage
A．To show the use of some numbers. B．To tell the stories of some numbers.
C．To give advice on how to count numbers. D．To introduce where the numbers come from.
（23-24八年级上·广东广州·期末）THE PLANT WORLD
There are more than 400,000 kinds of plants on Earth. Some plants are as big as tall buildings; others are as small as rice. Plants are key parts of the food circle. They play an important part in the nature because they give out oxygen—the gas that all animals need for breathing.
What is a plant
Most people have no difficulty finding the differences between an animal and a plant. That is because animals can move around, but plants can’t. What makes a plant a plant Like animals, plants are living things that are made up of lots of cells (细胞). Unlike animals, plants make their own food by photosynthesis (光合作用). Most plants have roots, stems, and leaves, and most plants reproduce by growing flowers and making seeds. All plants need energy to stay alive and grow, and they get it from sunlight instead of food.
How does a plant grow
Most animals grow in a certain way, and genes control their growth. That is to say, even when they are small, it’s easy to know what they will look like after they grow up. Plants are different. Their growth is controlled by genes too, but their final shape also depends on where they live. For example, a tree can be big and round if it grows up in an open space, but much taller and thinner if it grows in the woods with other trees all around. Plants are unable to move from one environment to another, so it is important that they are able to get used to the environment.
38．Which of the following is NOT mentioned in paragraph 1
A．Number of plants.
B．Different sizes of plants.
C．Importance of plants.
D．Parts of plants.
39．What method does the author use to describe the plants in paragraph 2
A．By comparing. B．By giving examples.
C．By giving numbers. D．By telling stories.
40．What can we know about plants from the passage
A．Flower and seed are the most important parts of a plant.
B．Plants and animals grow in the same way.
C．Only environment controls the plants’ growth.
D．It’s important for the plants to get used to the environment.
41．Where can we most probably read the passage
A．In an advertisement. B．In a story book.
C．In an encyclopaedia. D．In a poster.
（22-23八年级上·广东深圳·开学考试）Social media (社交媒体) are becoming very popular. People have completely made social media part of their daily lives. As a result, many people have developed an Internet personality.
The Internet personality is the one we shape on our social media sites. We are always posting (发布) information about ourselves for other people to know even when it can be completely untrue. Some people even spend money in buying followers or buying a very expensive camera for their friends to take photos of them. I find it unbelievable. The time and energy spent on these silly things can only make us want to be accepted by more people.
Social media are also a modern cause of depression (压抑): People see the perfect lives of others and consider their own imperfect lives as bad. Even kids deal with this.
I find that many people spend more time and energy on online personality and care less about their real personality. So many times I have seen confident and beautiful girls on social media. But in the real world, they are quite shy.
Social media have gone so far as to even affect (影响) marriages. This is because there are now “Instagram husbands”. These husbands take perfect photos of their partners throughout the day. They spend a lot of time doing that whether they like it or not. Social media are likely to influence relationships in a negative (消极的) way.
I think everyone shouldn’t use social media at least for a few months to experience the difference it makes to them. They may find life is very different and much better.
42．What does “the Internet personality” refer to
A．The hope to develop a better personality.
B．The personality developed through social media.
C．The true personality shown by us on social media.
D．The information we get about others on social media.
43．Why are social media a modern cause of depression
A．We may read some sad news. B．We have to try very hard to be accepted.
C．We can’t really find much useful information. D．We feel sad about ourselves through comparing.
44．What does the example given in Paragraph 4 show
A．Shy people can also become confident.
B．Social media make people have more energy.
C．People today pay no attention to their true personality.
D．Social media make people think their true personality unimportant.
45．What’s probably the writer’s attitude (态度) towards people’s using social media
A．He is for it. B．He is against it.
C．He doesn’t have any ideas. D．He doesn’t care about it.
《Unit3 Our digital lives单元话题阅读理解练习》参考答案
题号 1 2 3 4 5 6 7 8 9 10
答案 B A C C D C D C D D
题号 11 12 13 14 15 16 17 18 19 20
答案 A C B C A D C A B C
题号 21 22 23 24 25 26 27 28 29 30
答案 A C B A D B D C A A
题号 31 32 33 34 35 36 37 38 39 40
答案 B B D B D C B D A D
题号 41 42 43 44 45
答案 C B D C B
1．B 2．A 3．C 4．C 5．D
本文是一篇说明文。主要介绍了选择手写而不是使用键盘可以更好地学习和记忆。
1．细节理解题。研究过程是按照事情发展顺序写的。根据第三段中“12 young grown-ups and 12 children took part in the study.”和“Each person wore a special cap with over 250 electrodes on the head, and was asked to write by hand and use a keyboard.”以及第四段的“The results showed that the brain in both young grown-ups and children was much more active when writing by hand than when using a keyboard.”可知，研究过程如下：先找参加研究的人，之后每人戴上特殊的帽子，然后要求学生用键盘和手写，最后记录和研究结果。顺序为③②④①。故选B。
2．细节理解题。根据“The results showed that the brain in both young grown-ups and children was much more active when writing by hand than when using a keyboard.”可知，研究结果为用手写字时的大脑比用键盘写字时更活跃。故选A。
3．词句猜测题。根据“plenty of senses become active by holding a pen and putting it down on paper, seeing the letters written and hearing the sound made while writing. ”可知，用手写字时的感觉体验在大脑的不同部分之间建立联系，打开大脑学习的大门。划线单词they指代前面的用手写字时的感觉体验。故选C。
4．细节理解题。根据“Learning to write by hand is a slower course, but it’s important for children to experience the tiring step of learning to write by hand”可知，从长远来看，定期进行书写练习将提高学生的学习能力。故选C。
5．篇章结构题。通读全文可知，第一、二段主要介绍了选择手写而不是使用键盘可以更好地学习和记忆的；第三、四段介绍了研究此观点的实验；第五、六段介绍了用手书写的重要性及其原因。故选D。
6．C 7．D 8．C 9．D 10．D
本文主要介绍了科学家与座头鲸的“对话”，这是人类与座头鲸之间的首次交流。
6．细节理解题。根据“Their conversation took place after the scientists sent a ‘contact call’ into the ocean off the coast of Alaska.”可知，对话发生在阿拉斯加海岸的海洋中。故选C。
7．推理判断题。根据“The scientists made the same call 36 times over a 20-minute period. Each time, Twain responded by calling back. She even matched the intervals (间隔) between each call that the researchers made, which greatly surprised the scientists.”可知，科学家们在20分钟内发出了36次同样的信号，每次Twain都会回应，她甚至匹配了研究人员每次通话之间的间隔，这可说明Twain非常聪明，科学家们对此感到惊讶。故选D。
8．细节理解题。根据“Professor Brenda Mc Cowan told the Business Insider website that this research could make it easier to talk to aliens (外星人).”可知，这项研究可能有助于人类与外星人联系。故选C。
9．细节理解题。根据“They spoke to her in ‘humpback language’ for 20 minutes. Their conversation took place after the scientists sent a ‘contact call’ into the ocean off the coast of Alaska.…”可知，文中阐述了科学家通过“座头鲸语言”与Twain交谈了20分钟，因此回答了是如何与Twain进行“对话”的。故选D。
10．推理判断题。通读全文可知，本文主要介绍了科学研究和与鲸鱼的“对话”，这通常出现在科学杂志中。故选D。
11．A 12．C 13．B 14．C 15．A
本文介绍了云林里的动物植物以及它现在面临的环境危机，呼吁人们保护云林。
11．细节理解题。根据“Rain falls almost every day.”可知，几乎每天下雨，故选A。
12．词义猜测题。根据“Rain falls almost every day...so plants can get all the water they need from the fog and rain.”可知，几乎每天下雨，植物可以从雾和雨中获得所需的所有水分。因此空气是非常湿润的。故选C。
13．细节理解题。根据“Hundreds of mosses (苔藓) grow...There are many kinds of special animals in cloud forests. For example, tree kangaroos live in trees like monkeys...Frogs have suckers (吸盘) on their toes”可知，云林里的动物植物苔藓、树袋鼠和有吸盘的青蛙，故选B。
14．细节理解题。根据“people cut down many trees to plant crops or feed cows. The animals are losing their homes.”可知人类砍伐树木，导致动物们失去了家园。故选C。
15．主旨大意题。根据最后一段“Save the cloud forests before it’s too late!”可知，作者想要呼吁人们关注云林，拯救云林。故选A。
16．D 17．C 18．A 19．B 20．C
本文主要介绍了几个数字的历史和有趣事实。
16．细节理解题。根据“They are basic elements (元素) of mathematics for counting, measuring, and solving equations (方程).”可知人们可以用数字数数、测量、计算和解方程，不包括去旅行。故选D。
17．细节理解题。根据“It was the age of Henry VI (亨利六世) when he became King of England (he was nine months old).”可知亨利六世在九个月大的时候成为了英国的国王。故选C。
18．细节理解题。根据“Three is a creepy number in some cultures. In Vietnam, it’s bad luck to have three people in a photo as the one in the middle might die.”可知数字3在一些国家代表不幸。故选A。
19．细节理解题。根据“Human children need around 10 hours of sleep a night (you’d need two hours if you were a giraffe and twenty-two hours if you were a koala).”可知一个小孩每晚需要睡十个小时。故选B。
20．推理判断题。本文主要介绍了数字的有趣事实，因此可能在数学博客上读到此文章。故选C。
21．A 22．C 23．B 24．A 25．D
本文主要讲述了人类发明了一种像人类皮肤一样能自愈的电子皮肤，讲述了其原理和优点。
21．细节理解题。根据文章第二段第二句“Scientists have made e-skin before to help repair human skin and to make prosthetic arms and legs.”可知， A项“修复人类皮肤，并制作假肢”符合，故选A。
22．细节理解题。根据文章第二段“But other kinds of e-skin are usually not very stretchy, so they break easily. They are also not as sensitive as real skin.“可知，C项“它很昂贵”文中未提及，故选C。
23．细节理解题。根据文章第三段“Scientists used a hydrogel to make the e-skin... and sense things from 20 cm away.”可知，科学家们使用一种水凝胶来制造这种电子皮肤，然后他们在水凝胶上放了一层传感器，这些传感器可以在0.1秒内做出反应，即③②①，故选B。
24．推理判断题。根据文章第四段“When used in humans, the new e-skin can get medical information, such as someone’s blood pressure.”可知，电子皮肤已经用在了医疗上，A项“医疗护理”符合，故选A。
25．文章出处题。本文主要讲述了人类发明了一种像人类皮肤一样能自愈的电子皮肤，属于新科技领域，所以可能在报纸的科技板块看到本文。故选D。
26．B 27．D 28．C 29．A
本文讲述了梦与睡眠的关系，梦甚至比睡眠还要重要，它占据我们睡眠的1/4，与我们的生活及其工作都是密切相关的。
26．细节理解题。根据“Dreams are like short films. They are usually in colour.”可知梦和电影通常是彩色的。故选B。
27．细节理解题。根据“Some people get new ideas about their work from dreams. They may think about their work all day. These ideas can be carried over into dreams”可知他们可能整天都在想他们的工作，这些想法可以带入梦境。故选D。
28．细节理解题。根据“But often we can’t remember the dream. Dreams can go away quickly.”可知我们常常记不起那个梦，梦可以很快消失。故选C。
29．主旨大意题。本文讲述了梦与睡眠的关系，梦甚至比睡眠还要重要，它占据我们睡眠的1/4，与我们的生活及其工作都是密切相关的。故选A。
30．A 31．B 32．B 33．D
本文介绍了狮子是陆地食物链的顶端，鲨鱼是海洋食物链的顶端，而整个世界食物链的顶端是人类。人类是食物链的一部分，我们要注意保护动物，才能维持生态平衡。
30．细节理解题。根据“In the sea, people say the shark is at the top of the food chain.”可知，海洋中鲨鱼是食物链的顶端。故选A。
31．细节理解题。根据短文第二段举的例子可知，人们用枪杀死了很多野狼。近年来，因为野狼的数量越来越少，野兔的数量增多，由于野兔的严重破坏，许多草原变成了沙漠。由此可知人们破坏了生物链。故选B。
32．词义猜测题。根据语境“For example, many years ago in Inner Mongolia, people used guns to kill a lot of wild wolves. People thought they posed a threat to their sheep.”可知，人们用枪杀死野狼，因为人们觉得狼对羊来说是一个威胁。threat“威胁”。故选B。
33．主旨大意题。根据文意和短文最后一段“Remember that we are part of the food chain, so we are in danger, too! If we love animals, we are loving ourselves.”我们是食物链的一部分！爱护动物，就是爱护我们自己。由此可知，这篇短文是为了让我们更多的关注动物。故选D。
34．B 35．D 36．C 37．B
本文是一则关于数字、马拉松和日历计算法的短文。
34．细节理解题。根据表格第一栏“The number ‘eleven’ comes from the German word ‘ainlif’, which means ‘one left’ in English. Twelve follows the same rule.”可知，数字11和12来自德语。故选B。
35．细节理解题。根据表格第二栏“But people for the 1908 Olympic Games in London wanted to add something different.”可知，1908年伦敦奥运会的组织者想要添加一些不同的东西。故选D。
36．细节理解题。根据表格第二栏“The story began with an ancient Greek soldier, Pheidippides. Once his country won a big war and he carried the good news from Marathon to Athens.”可知，费迪庇得斯从马拉松跑到雅典去传达这个好消息，选项C表述正确。故选C。
37．推理判断题。通读全文可知，本文是一则关于数字、马拉松和日历计算法的短文，是讲了一些数字的故事。故选B。
38．D 39．A 40．D 41．C
本文主要介绍了植物世界的特点和生长方式。地球上有超过40万种植物，有些植物高大如建筑物，有些小如米粒。植物是食物链中的关键部分，通过光合作用释放氧气，对自然界起着重要作用。植物是由许多细胞组成的生物，通过光合作用自己制造食物。它们的生长受基因控制，但最终形态也受生长环境影响。植物无法移动到不同的环境，因此适应环境对它们非常重要。
38．细节理解题。根据第一段“There are more than 400,000 kinds of plants on Earth. Some plants are as big as tall buildings; others are as small as rice. Plants are key parts of the food circle. They play an important part in the nature because they give out oxygen—the gas that all animals need for breathing.”可知，第一段提到的了植物的数量，大小不同的植物，以及植物的重要性，没有提到植物的一部分。故选D。
39．细节理解题。根据第二段“Most people have no difficulty finding the differences between an animal and a plant. That is because animals can move around, but plants can’t. What makes a plant a plant Like animals, plants are living things that are made up of lots of cells (细胞). Unlike animals, plants make their own food by photosynthesis (光合作用).”可知，第二段是通过与动物对比来描述植物的。故选A。
40．细节理解题。根据最后一段“Plants are unable to move from one environment to another, so it is important that they are able to get used to the environment.”可知，植物适应环境是很重要的。故选D。
41．推理判断题。通读全文可知，本文主要介绍了植物世界的特点和生长方式，因此可在百科全书中读到该文章。故选C。
42．B 43．D 44．C 45．B
本文主要讲述了现代人们把社交媒体作为日常生活的一部分，但事实上人们在社交媒体上塑造的个性形象、相互之间的攀比等现象，对人们产生了负面影响，因此作者呼吁大家远离社交媒体。
42．细节理解题。根据“The Internet personality is the one we shape on our social media sites.”可知，互联网个性是指大家在社交媒体上塑造的一种性格。故选B。
43．细节理解题。根据“Social media are also a modern cause of depression (压抑): People see the perfect lives of others and consider their own imperfect lives as bad.”可知，当人们在网络上看到他人的生活很完美时，会通过比较，认为自己的生活很糟糕。故选D。
44．推理判断题。根据“many people spend more time and energy on online personality and care less about their real personality. So many times I have seen confident and beautiful girls on social media. But in the real world, they are quite shy.”可知，人们花费大量时间精力打造网络个性，从而忽视现实中真实的性格。故选C。
45．观点态度题。根据“Social media have gone so far as to even affect (影响) marriages；Social media are likely to influence relationships in a negative (消极的) way；I think everyone shouldn’t use social media at least for a few months to experience the difference”可知，作者认为社交媒体会给两人的婚姻带来消极影响，让我们尝试几个月不使用社交媒体，因此作者对社交媒体持反对态度。故选B。

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