在日常生活中如何保护野生动植物呢，一起来看看文中提出了哪些做法。
Wildlife faces threats from habitat destruction, pollution and other human actions. Although
protecting wildlife can seem overwhelming at times, even small actions in your own neighborhood can
help protect many different animals.
Create wildlife friendly areas in your backyard. You can choose native plants that can provide food and
shelter to native wildlife. This will also help cut down on pollution. Add bird or bat houses to your yard or
garden to attract and shelter these species.
Avoid disrupting the natural ecosystem in your area. Nonnative plants or animals can destroy habitats, particularly if there is no natural predator to keep the species in check. Invasive plants can kill or disrupt native plants that provide food and shelter for wildlife.
Have a greener lifestyle. By conserving water and fossil fuels， you will be helping to protect the wildlife around you. Take public transportation when you can, turn off electric devices when you're not using them. Become knowledgeable about what contributes to global warming, what disrupts migration patterns and habitats.
Buy products that are wildlife friendly. Avoid products that are made from threatened or endangered animals. Keep in mind that some endangered animals are killed by traps, snares or hunters who are after other wildlife within the same habitat.
Talk to or write to policymakers about protecting wildlife. Discuss ways to help animals with friends and family members.
Limit family size. Population growth is one of the major factors in habitat destruction. By living in established city limits and limiting family size to around two children per family, the earth's population will stabilize and native habitats can be protected.
【注】 ①habitat n. (动物的)栖息地 ②disrupt v. 扰乱 ③predator n. 捕食性动物 ④fossil fuel 化石燃料(如煤、石油等) ⑤stabilize v. (使)稳定
【立德树人】 如果没有野生动植物，地球上的人类也延续(continue)不下去，野生动植物帮我们制造氧气、食物、提供各种资源，没有野生动植物就没有人类(No wildlife, no humans)。做一个爱护野生动植物的人，用自己的聪明才智保护好野生动植物，让野生动植物
⑤
④
③
②
①
和人类和平相处。
Section Ⅰ Listening and Speaking
基础知识 预习自检
Ⅰ.重点词汇
1．illegal adj. 不合法的；非法的→illegally adv. 不合法地；非法地→legal adj. 合法的→legally adv. 合法地；在法律上
2．hunt vt.& vi. 打猎；搜寻；追捕→hunter n. 猎人→hunting n. 狩猎运动；打猎 3．immediate adj. 立即的；立刻的→immediately adv. 立刻
4．alarming adj. 惊人的；使人惊恐的→alarm vt. 使惊恐；使害怕；使担心 n. 恐慌；警报；警报器
5．rate n. 速度；(比)率 vt. 划分等级→rating n. 等级；级别 6．extinct adj. 已灭绝的→extinction n. 灭绝
7．aware adj. 知道；发觉；有……意识的→awareness n. 觉悟；意识 8．danger n. 危险→endanger vt. 使遭受危险；危害
9．concern vt. 涉及；让……担忧→concerned adj. 担心的；关切的
10．live vi. 居住 adj. 活的；现场直播的→living adj. 居住的；活的；在用的 n. 生活方式；生计
Ⅱ.教材原句
1．What message do these ____________ (海报共享)? 答案：posters share
2．Between 150 and 200 species are becoming ________ (灭绝的；消亡的) every day. 答案：extinct
3．What ____________ (究竟) are we doing to our planet? 答案：on earth
4．We must make people ____________ (意识到) the problem. 答案：aware of
5．How many elephants are killed ____________ (平均) every day? 答案：on average
6．I'm ______________ (关心) the African elephants. 答案：concerned about
7．Elephants need large ________ (生活) spaces. 答案：living
8．It's difficult for them to ____________ (适应) the changes.
答案：adapt to
9．______________ (什么措施) are being taken to help them? 答案：What measures
10．The authorities are ________________ (在压力下) to build elephant parks. 答案：under pressure
重点知识 合作探究
1 die out 灭亡；逐渐消失(教材P14) die off 相继死去，先后死去 归纳 拓展 die down 逐渐变弱，逐渐平息 die away (尤指声音)逐渐减弱，逐渐模糊，逐渐消失 die from 死于……(强调外因，如污染、事故、地震等) die of 死于……(强调内因，如疾病、衰老、悲伤等) ①Scientists said that those plants died_out a century ago. 科学家们说那些植物一个世纪前就灭绝了。
②She waited until the footsteps had died_away. 她一直等到脚步声渐渐消失。
③After a while, the wind began to die_down. 过了一会儿，风开始减弱。
④More than half of patients die_of the disease. 有超过半数的患者死于该病。
(1)单句语法填空
①It is reported that there are 40,000 species dying ________ in the world every year.
②The sound of the car died ________ in the distance.
③The young driver died ________ the wounds caused by a road accident. ④The trees have been dying ________ during the cold winter, and there are few left.
答案：①out ②away ③from ④off (2)单句写作
如果我们不采取行动，许多物种将很快灭绝。
Many species ______________ soon if we don't take action. 答案：will die out
2 aware adj. 知道；发觉；有……意识的(教材P14) (1)be/become aware of ... 知道/明白/意识到…… 归纳 拓展 be/become aware that ... 知道/明白/意识到…… make sb. aware of sth. 让某人明白某事 as far as I'm aware ... 据我所知…… (2)awareness n. 意识，觉悟 ①The children are_aware_of the danger of taking drugs. 孩子们知道吸毒的危害。
②If she had_been_aware_that the mushrooms were poisonous, she wouldn't have picked them for dinner.
她那时要是知道这些蘑菇有毒，就不会采来做晚餐。
③Everybody should be_made_aware_of the risks involved. 应该让人人都知道所涉及到的风险。
④It is important that students develop an awareness of how the Internet can be used.
重要的是学生逐渐懂得如何使用互联网。
(1)单句语法填空
①I don't think people are really aware ________ just how much it costs. ②Were you aware ________ something was wrong?
③You must have an ________ (aware) of the importance of eating a healthy diet. 答案：①of ②that ③awareness (2)单句写作
①我在等待的时候，感觉到房子里发生了什么事。
As I waited, I ______________ something happening in the house. ②据我所知，他们是一对幸福的夫妻。
________________， they are a happily married couple. 答案：①became aware of ②As far as I'm aware
3 归纳 拓展 average n. 平均数；平均水平 adj. 平均的；正常的；普通的(教材P14) (1)above/below average 平均水平以上/以下 on average 平均 an average of 平均为 (2)average out (at sth.) 平均数为 ①The average age of the students is 15. 学生的平均年龄是15岁。
②Parents spend an_average_of $220 a year on toys for their children. 父母一年平均在孩子玩具上的花销为220美元。 ③These marks are above/below_average. 这些分数在一般水平以上/以下。
④400 people a year die of this disease on_average. 平均每年有400人死于这种疾病。
⑤The cost should average_out at about ￡6 per person. 费用应该是平均每人约6英镑。
(1)单句语法填空
①The prices were a little ________average, but they're of the highest quality. ②It takes an average ________ten weeks for a house sale to be completed. 答案：①above ②of (2)单句写作
现在一辆公共自行车平均每天被租借和归还4次。
At present a public bicycle is rented and returned four times a day ____________. 答案：on average
4 concern vt. 涉及；让……担忧(教材P15) (1)concern oneself about/with ... 担忧/关心……/使……感兴趣 concern sb./sth. 与……有关；关系着 (2)feel/show concern about/for ... 担心/关心/挂念…… 归纳 拓展 sb.'s concern 某人的责任 (3)concerned adj. 担心的；关切的 be concerned with 与……有关的 be concerned about/for 担心/关心 be concerned that ... 担心…… as far as ... be concerned 就……而言 (4)concerning prep. 有关，关于，涉及 ①He didn't concern_himself_with the details. 他对细节不感兴趣。
②We are all concerned_about/for your safety. 我们都关心你的安全。
③That's good news, but as_far_as_I'm_concerned,_it's not good enough. 这是一个好消息，但就我而言，这还不够好。
④The money side of the business is your_concern. 这件事钱的方面由你负责。
⑤She was_concerned_that she might miss the turning and get lost. 她担心自己会错过转弯的地方而迷路。
(1)单句语法填空
①I've been concerned ________ you lately.
②As far as I'm ________ (concern), tennis is a much more interesting sport than football.
③The text is concerned ________ space flight. 答案：①about/for ②concerned ③with (2)单句写作
你不需要为那件事担心。
You don't need to ________ yourself ________ it. 答案：concern; with/about
5 adapt vi. 适应 vt. 使适应；使适合(教材P15) (1)adapt (oneself) to (使自己)适应 归纳 拓展 adapt sth. to do sth. 改装某物以便做某事 adapt sth. for sb. 修改某物供某人使用 be adapted for sth. 改编成某物 (2)adaptation n. 适应；改编(本) ①It took him a while to adapt_himself_to his new surroundings. 他过了好一阵子才适应了新环境。
②The house was_adapted_for wheelchair users. 为方便轮椅使用者，对房子进行了改造。
③When it comes to adaptation,_it is important to understand that climate change is a process.
当谈到适应时，理解气候改变是一个过程很重要。
(1)单句语法填空
①The world will be different, and we will have to be prepared to adapt ________ the change.
②Evolution occurs as a result of ________ (adapt) to new environments. 答案：①to ②adaptation (2)单句写作
首先，适应一种新文化是很难的。
For a start, it would be hard ____________ a new culture. 答案：to adapt to
6 归纳 拓展 in danger of 有……危险(教材P15) (1)out of danger 脱离危险 a danger to ... 对……有危险；对……是危险的人或物 (2)dangerous adj. 危险的 ①This kind of animal is in_danger_of becoming extinct. 这种动物有灭绝的危险。
②My father has been very ill, but the doctor says he is out_of_danger now. 我父亲一直病得很重，但医生说他现在已脱离危险。 ③A careless driver is a_danger_to the public. 粗心的驾驶员对于公众是一种危险。
④The prisoners who escaped are violent and dangerous. 这些逃犯残暴而危险。
[易混辨析：in danger, dangerous]
in danger 指人或物本身处于危险中，受到外来的威胁 dangerous 指人、物、事态可能引起危险，对别人构成威胁
(1)单句语法填空
①People who get lost in the forest will be ________ danger because there are many ________ (danger) animals there.
②There lives a criminal in the neighbourhood, who is a danger ________ the people
there.
答案：①in; dangerous ②to (2)单句写作
①The little girl was ________________ (处于危险中) yesterday, but now she is ________________ (脱离危险)．
②Gradually, those workers began to know that they were ______________ (有……危险) losing their jobs.
答案：①in danger; out of danger ②in danger of
学习效果 随堂演练
Ⅰ.单词拼写
1．You'll be very pleased to know that we offered help ________ (立即)． 答案：immediately
2．Giant pandas are the world's most endangered ________ (物种)． 答案：species
3．They have collected a great ________ (大量) of data. 答案：mass
4．It is dangerous using this method to ________ (测量) the speed of light. 答案：measure
5．She now has ________ (当权；权威) over the people who used to be her bosses. 答案：authority Ⅱ.单句语法填空
1．A ________ (hunt) is a person who hunts wild animals for food. 答案：hunter
2．These reports about the teenagers are extremely ________ (alarm)． 答案：alarming
3．We cannot ignore the danger of tiger's ________ (extinct) in our country. 答案：extinction
4．The President is deeply ________ (concern) about this issue. 答案：concerned
5．I want Welsh to be seen and heard as a ________ (live) language. 答案：living Ⅲ.单句写作
1．一般来说，女人比男人寿命长。
______________， women live longer than men.
答案：On average
2．我一直很清楚还要做多少工作。
I'm always very ________________ how much work there is still to be done. 答案：aware of
3．我发现适应新生活并不容易。
I found it not easy to ______________ new life. 答案：adapt to
4．你究竟是怎样设法逃脱的呢？
How ________________ did you manage to escape? 答案：on earth
5．迫于公众压力，许多地区政府对各自海滩进行了清理。
________________ from the public, many regional governments cleaned up their beaches.
答案：Under pressure Ⅳ.阅读理解
The Fennec fox is also known as the desert fox since it survives in the Sahara Desert (沙哈拉沙漠). It is the smallest of the species of foxes, and quite a few people wish to raise it as a pet because of its appearance. However, this is very rare, as it needs special care and attention. Let's take a look at the basic information on the Fennec fox, including its physical appearance, natural habitat, and diet.
Physical Appearance
The Fennec fox is the smallest type of fox, with a body length of about 9.5－
16 inches, and 6inchlong ears. It weighs only around one kilogram. It has a creamcolored, furry body, with a blacktipped tail.
Their ears are the largest among all foxes relative to the body size, which not only provide them with great hearing, but also radiate the extreme desert heat and thus help to keep the body cool. Moreover, in order to walk on the hot sand, a Fennec fox's feet are covered with thick fur. Not only that, the feet also help in digging, as this animal lives under the ground.
Habitat and Lifestyle
The habitat of this animal is mainly in the Sahara Desert, and also in other parts of North Africa. The Fennec fox is usually active during the night. This character helps it deal successfully with the extreme heat in the desert.
As an extremely social animal, it often lives in groups of ten and each group has its own land. This animal is, however, aggressive too, ready to attack, especially in the mating (交配) season, when they all compete with each other for a mate.
Diet
The Fennec fox is an omnivore (杂食动物). While it can survive on plants, it also needs other items such as insects, rabbits, birds and eggs. Getting used to living in the desert allows it to survive for long periods without any water. They are known to take in water when eating food, but will drink water if available.
篇章导读：本文是一篇说明文。文章主要介绍了耳廓狐的形态特征、栖息环境、生活习性以及食性。
1．What helps the Fennec fox survive in the desert? A．The small body size. C．Getting active at night.
B．The great hearing. D．Living in groups.
答案：C 细节理解题。根据第四段中的“The Fennec fox is usually active during the night. This character helps it deal successfully with the extreme heat in the desert.”可知，耳廓狐通常在晚上活动，这一特点使它可以应对沙漠的酷热，故选C项。
2．The word “radiate” (Paragraph 3) is closest in meaning to ________. A．send out C．suffer from
B．take in D．turn down
答案：A 词义猜测题。根据第三段中的“... radiate the extreme desert heat and thus help to keep the body cool.”可知，耳廓狐通过耳朵调节热量，保持身体凉爽。保持身体凉爽应该是要散发热量，所以radiate的意思与A项接近。
3．What can we learn about the Fennec fox in the passage? A．It seldom attacks others.
B．It's difficult to raise it as a pet. C．It can survive without any water. D．It's the smallest animal in the desert.
答案：B 推理判断题。根据第一段中的“However, this is very rare, as it needs special care and attention.”可知，耳廓狐作为宠物非常少见，因为它需要特殊的护理，由此推断B项正确。根据第五段中的“This animal is, however, aggressive too, ready to attack”可知A项错误；根据最后一段中的“They are known to take in water when eating food, but will drink water if available.”可知C项错误；根据第二段中的“The Fennec fox is the smallest type of fox ...”可知，耳廓狐是最小的狐狸，而不是沙漠最小的动物，故D项错误。
课后课时作业
Ⅰ 完形填空
A thousand years ago Hong Kong was covered by a thick forest like the forests we now find in Malaysia and Thailand. As more and more __1__ came to live in Hong Kong, these trees were cut down and burnt. Now there is no forest left, __2__ there are still some areas covered with trees. We call these __3__.
Elephants, tigers, monkeys and many other animals used to live in the __4__ forests of Hong Kong, and there were even crocodiles in the __5__ and along the coast. When people came to live in Hong Kong, the animals began to __6__ out. Early farmers grew rice and kept pigs and chickens in the valleys.
They __7__ the trees and burnt them. They needed fires to keep themselves __8__ in the winter, to cook their food, and to keep away from dangerous animals. Elephants quickly disappeared because there was not enough __9__ for them. So did most of the wolves, and tigers. Monkeys, squirrels and many other animals soon died out in the same __10__.
You might think that there are __11__ any animals in Hong Kong, except in the __12__. You might think there can't be any wild animals in such a __13__ place with so many cars and buildings. But there is __14__ a good deal of countryside in Hong Kong and New Territories, and there are still about thirtysix different kinds of animals living there.
One of the most interesting of Hong Kong's __15__ is the barking deer. They are beautiful little creatures with rich, brown coat and a white patch under the tail.
They look like deer but they are much __16__. They are less than two feet high. The male barking deer has two small horns but the female has none. They make a __17__ rather like a dog barking.
Barking deer live in thick shrub (灌木) country and are very good at __18__. They eat grass and shrubs, mainly in the very early morning and late afternoon and evening. This is when you are most likely to see one but you will need to be very quiet and to have very __19__ eyes. In Hong Kong the barking deer has only one __20__—man. Although it is illegal, people hunt and trap these harmless little animals. As a result there are now not many left. There are a few on Hong Kong Island but none in the New Territories.
篇章导读：本文是一篇说明文。香港，这个世界闻名的繁华都市，曾是多种动物的栖息地，由于人类的活动，它的原貌发生了改变。尽管如此，香港的郊区依然生活着多种动物。
1．A.people C．ladies
B．children D．women
答案：A 由空格后的“live”可确定此处指“很多人来此居住”。 2．A.as C．though
B．since D．because
答案：C 根据空格前后的语意“现在没有森林了”和“还有一些地区由树木覆盖”可以看出前后语意为转折关系。故选C。
3．A.desert C．fields
B．shades D．woods
答案：D these指代前文出现的“areas covered with trees”，这样的地方应称之为“树林”。
4．A.thin C．short
B．thick D．dying
答案：B 由语境可以看出，此处是描述香港在人类到来之前森林繁茂的景象。 thick forest意为“繁茂的森林”。
5．A.rivers C．sky
B．hills D．mountains
答案：A 由前文的“crocodiles”以及空格后的“along the coast”可知，鳄鱼应生活在河里。
6．A.die C．come
B．look D．get
答案：A 由于人类的出现，香港从前的样子被破坏了，动物也开始灭绝。die out “灭
绝”。
7．A.put up C．cared for
B．looked after D．cut down
答案：D 由前后文可以看出，人们来到香港后，这里的自然环境开始遭到破坏，树木被砍伐。 put up “建造，设立，张贴”；look after “照看”；care for “喜欢，照顾”；cut down “砍倒”。
8．A.cold C．warm
B．cool D．hot
答案：C 根据空格前的“needed fires to keep themselves”可以看出，人们砍伐树木是为了在冬天能够生火取暖。
9．A.air C．water
B．food D．clothes
答案：B 由前后文可以看出，大象很快消失，因为它们没有足够的食物可以吃。 10．A.way C．street
B．road D．rail
答案：A in the same way意为“以同样的方式”。 11．A.never C．no
B．always D．no longer
答案：D 由该段后半部分“ But there is ... and there are still about thirtysix different kinds of animals living there.”可以看出，前后文为转折关系，由此可知此处句意为“你可能认为香港不会再有动物了”。no longer “不再”。
12．A.zoos C．kitchens
B．shops D．parks
答案：A 除了动物园其他地方就没有动物了。 13．A.free C．big
B．busy D．large
答案：B 由空格后的“with so many cars and buildings”并结合实际情况可以看出，香港是一个熙来攘往的城市。
14．A.no more C．still
B．nearly D．hardly
答案：C 由对该句内容的理解可知，虽然香港原来的自然环境遭到了一定程度的破坏，但香港仍然有许多郊区，仍旧有很多种动物生活在那里。
15．A.animals C．fishes
B．plants D．birds
答案：A barking deer是一种动物，故该空应选择animals。 16．A.great C．smaller
B．larger D．heavier
答案：C 由空格后的“They are less than two feet high.”可以看出，赤麂(barking deer)个头并不大。
17．A.noise C．song
B．voice D．living
答案：A 由空格后的“rather like a dog barking”(更像是犬吠)可以看出此处在描写赤麂的叫声。 noise可指“声音”，而voice强调“人的声音”。
18．A.barking C．planting
B．eating D．hiding
答案：D 由后文的“... you will need to be very quiet and to have very __19__ eyes.”可知，赤麂非常善于躲避其他生物。
19．A.common C．clear
B．sharp D．big
答案：B 由于赤麂非常警觉，所以，要看到它们就必须有敏锐的眼睛。 20．A.neighbor C．enemy
B．brother D．friend
答案：C 由后文的“people hunt and trap these harmless little animals”可以看出，人类是赤麂的天敌。
Ⅱ 阅读理解
Elephants are able to know the difference between a man and a woman, and can tell an adult (成年人) from a child—all from the sound of a human voice. This is according to a study in which researchers played voice recordings to wild African elephants.
The animals showed more fear when they heard the voices of adult Masai men. Usually Masai people hunt elephants, and this suggests that animals have grown to listen for and avoid them.
Prof. Karen McComb and Dr Graeme Shannon from the University of Sussex led the study. They explained that in former research they had used similar experiments to show that elephants could tell from the sound of a lion—whether the animal was a female (雌性) or a more dangerous male (雄性)．
Prof. McComb wanted to find out if the animals used their very sharp sense of hearing to recognize danger from humans.
The scientists recorded Masai men, women and children saying, in their own language, “Look, look over there, a group of elephants are coming.” They also recorded Kamba men saying this phrase.
Masai people often come across elephants, which can result in violent (暴力的) hunting. Kamba people, however, mainly feed on agriculture, which does not generally bring them into violent touch with the animals.
When the team played recordings of these different voices through a hidden speaker, they found that elephant family groups showed more fear in response to the voice of a Masai man than to a Kamba man's voice. And the adult male Masai voices encouraged far more of these defensive reactions than the voices of women or boys.
篇章导读：本文是一篇说明文，一项研究表明，大象能根据人类说话的声音判断出人类的性别、是否为成人以及对它们的危险程度。
1．An elephant can tell a man from a woman by sense of ________. A．touch C．smell
B．sight D．hearing
答案：D 细节理解题。由第一段第一句可知大象通过听觉判断男性和女性。故选D。 2．How did the researchers get to know the elephants' special ability? A．By watching the elephants in the zoo. B．By playing voice recordings to them. C．By recording the behaviors of elephants. D．By communicating with them in a special way.
答案：B 细节理解题。由第一段最后一句“This is according to a study in which researchers played voice recordings to wild African elephants.”可知，研究人员通过给野生非洲大象播放录音，发现其有这种能力。故选B。
3．We can learn from the passage that elephants are especially afraid of ________.
A．Masai men C．Kamba men
B．Masai women D．Kamba women
答案：A 细节理解题。根据第二段第一句“The animals showed more fear when they heard the voices of adult Masai men.”可知，当大象听到成年的马塞男人的声音时，它们就显得更加害怕。根据最后一段中的“And the adult male Masai voices encouraged far more of these defensive reactions than the voices of women or boys.”可知，成年的马塞男人的声音比女人和男孩的声音会引发大象更多激烈反应。故选A。
4．What is the best title for the passage? A．Elephants and Human Beings B．Differences Between Human Voices C．Elephants Recognize Human Voices D．Elephants at War with Human Beings
答案：C 标题判断题。结合全文可知，研究表明大象可以根据人类说话的嗓音来判别是成年人还是小孩，是男性还是女性以及可能有的危险程度，这足以说明本文主要讲大象能识别人类的声音。故选C。
Ⅲ 七选五
(2017·北京高考)Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month.__1__
One idea is that sleep helps us strengthen new memories. __2__ We know that, while awake, fresh memories are recorded by reinforcing (加强) connections between brain cells, but the memory processes that take place while we sleep have been unclear.
Support is growing for a theory that sleep evolved so that connections between neurons (神经元) in the brain can be weakened overnight, making room for fresh memories to form the next day. __3__
Now we have the most direct evidence yet that he is right. __4__ The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping.
If Tononi's theory is right, it would explain why, when we miss a night's sleep, we find it harder the next day to concentrate and learn new information—our brains may have smaller room for new experiences.
Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some synapses seem to be protected and stayed the same size. __5__ “You keep what matters，” Tononi says.
A．We should also try to sleep well the night before.
B．It's as if the brain is preserving its most important memories.
C．Similarly, when people go for a few days without sleeping, they get sick. D．The processes take place to stop our brains becoming loaded with memories. E．That's why students do better in tests if they get a chance to sleep after learning.
F．“Sleep is the price we pay for learning，” says Giulio Tononi, who developed the idea.
G．Tononi's team measured the size of these connections, or synapses, in the brains of 12 mice.
篇章导读：本文是一篇说明文。文章主要讲述了研究发现睡眠可以让记忆变得更好。 1．C 首句指出每种动物都要睡觉，但原因仍然是个谜。接下来是具体例证，如实验室的老鼠被剥夺了睡眠，一个月内就会死亡，同样，人类如果连续几天不睡觉，就会生病。故选C。
2．E 该段首句提出了第一个假设，睡眠帮助我们巩固新的记忆。与这个论点相呼应的例子是E项，该项中的that指代的就是前面的假设，也就是说，这个假设能够解释为什么学生在学习完如果有机会睡一觉，他们会在考试中发挥更好。
3．F 由下段首句中的代词he可知，该空中必然包含一个人名，否则he就失去了所指对象，浏览各选项，可锁定F项和G项，但只有F项能与本段的内容衔接，也就是说，睡眠会帮助清除记忆，为新记忆腾出空间。按照研究人员Tononi的说法，睡眠是我们为学习付出的代价。
4．G 该段首句说“现在我们有最直接的证据证明他的假设是对的”，那接下来应该是具体描述该证据。此外，该空后面一句话解释了实验的结果和意义。综合看来，只有G项符合语境，指出了研究团队、实验对象及实验内容。
5．B 由最后一段第二句及空格后的“you keep what matters” (你记住要紧的事情)可知B项“这就好像是大脑在保存最重要的记忆。”符合语境。
因篇幅问题不能全部显示，请点此查看更多更全内容