1、1、Many science fiction stories tell about explorers arriving in a new world. The explorers then use some kind of high-tech device to test for breathable air or signs of life. But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or eDNA fo
2、r short. Scientists can use it to identify rare species or estimate fish populations with just a little air or water.Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature.Caren Gol
3、dberg is one of the first biologists to take the technology from the testing stage to actually using it. She sees eDNA as a way to get answers more efficiently and with less destruction compared to traditional survey techniques. Until recently, scientists depended on snorkeling ( 潜水), netting or usi
4、ng an electric current to temporarily catch fish.This newer way to identify what lives in the environment is becoming popular around the world. Animal experts inVietnamare using the eDNA to find the last, wild Yangtze giant softshell turtles. One researcher on the Caribbean island of Trinidad is usi
5、ng the sampling technology to find endangered golden treefrogs. In Madagascar, it is being used to identify amphibian(两栖动物)diseases.Ms Goldberg has used eDNA testing to confirm the local extinction (灭绝) of a leopard frog in the American state of Idaho. She has also been asked to document the spread
6、of theNew Zealandmudsnail in the state of Washington. The creature has been found in lakes and other waterways across the state.Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the old-fashioned field work could soon be more targeted.
7、1.Compared to traditional survey techniques, eDNA is more_.A.complexB.eco-friendlyC.dangerousD.convincing2.By using eDNA, Caren Goldberg has_.A.succeeded in catching many fishesB.found the existence of golden treefrogsC.documented the spread of softshell turtlesD.confirmed the disappearance of the l
8、eopard frog in Idaho3.What can we infer from the last paragraph ?A.Robots will replace scientists soon.B.Some scientists are against using eDNA.C.The old-fashioned field work may disappear.D.Many biologists are unwilling to do the field work.4.What is the best title for the text?A.Science Fiction Ze
9、comes Reality for Species SurveysB.Biologists Explore Space with the Help of EdnaC.Scientists Find Methods to Test for Signs of LifeD.New Technologies Are Presented in Science Fictions2、Many people believe that you lose the ability to learn new languages as you get older. Language experts,however,wi
10、ll tell you that youre never too old to learn a new language. As you get older, it can be more difficult to learn a new language,though.Children and adults learn new languages in different ways. For children, language is their life. They study for thousands of hours every year. Because they need to
11、learn language to became part of their communities.Adults,on the other hand,are already part of a language community. Learning a new language means becoming part of another language community,and adults rarely get the chance to practice as much as young children do.Moreover.children leaning a new la
12、nguage are expected to make mistakes. This gives them freedom when learning to be daring and confident Adults,however,often feel pressured to be perfect when learning a new language.This can discourage many people and make it even harder to learn a new language.When young children learn a new langua
13、ge,they come to see various languages as a “normal” part of society.This mindset(思维模式) helps them embrace learning a new language without feeling like theyre doing something unusual or“too hard”.So if you want to learn a new language,go for it! Its never too late to learn a new language. If youre ol
14、der,it may take more work,but it can be done.If youre a young child,though,now is the time to step out and learn a new language!1.By “Language is their life”,the author means that children .A.cant live without languageB.lead a happy life every dayC.practice a new language a lotD.are taken good care
15、of adults2.What may make it hard for the old people to learn a new language!A.They are afraid of being laughed at.B.They usually have too many interests.C.They think making mistakes is natural.D.They always make all kinds of mistakes.3.Which of the following shows the difference between children and
16、 adults in learning new language?A.The behaviors they have.B.The learning attitudes.C.The future plans they have made.D.The materials they are using.4.According to the author,a new language .A.can never be learned by the old peopleB.can be grasped by the people easilyC.can be understood only by the
17、old peopleD.can learned by both the old and the young3、 SydneyA shark savaged a schoolboys leg while he was surfing with his father at a beach in Sydney on February 23. It was the third shark attack along the coast of Australias largest city in a month. The 15-year-old boy and his father were in the
18、 water off Avalon, on Sydneys northern beaches, around dawn when he was attacked. The citys beaches arc packed with locals and tourists during the summer months. The father heard a scream and turned to see his son thrashing(激烈扭动) about in the wafer,” police said. “Fortunately, the shark swam away an
19、d the boy was helped to the shore by his father. Lifesaving Club spokesman Nick Miller said,“It got him around the top of his left leg and the father came and dragged him out of water.” He said the boy was bleeding heavily when he was brought to the shore. “There was a lot of pain, as you can imagin
20、e. The teenager was airlifted to hospital for treatment for leg injuries. Police said the bites “cut through to the bone”,but the boy did not appear to have sustained any fractures(骨折). He was in a stable condition now. Several beaches were closed after the attack. Water police and lifeguards were s
21、earching for the shark, while police hoped to identify its species by the shape of the bite marks. But they said it was too early to say what type of shark attacked the boy. I dont even know if he saw it.” Miller said. Many shark species live in the waters off Sydneys beaches. but attacks on humans
22、are still relatively rare. However. there were two attacks on successive days earlier this month, one on a navy diver in Sydney harbor, not far from the famous Opera House, and the other on a surfer at the citys world-famous Bondi beach. Fishermen say shark numbers are on the rise. There is a ban on
23、 commercial fishing in the harbor, which has increased fish stocks. Marine experts also claim environmental protection has created a cleaner environment, attracting sharks closer to the shore as they chase fish. Many shark species, including the Great Whitethe man-eaters made famous in Steven Spielb
24、ergs Jawsare protected in Australian waters.1.The report mainly tells us_.A.shark attacks on humans are on the riseB.sharks attacked humans three times in one monthC.a boy was attacked by a shark at a Sydney beachD.shark numbers are increasing in the waters off Sydneys beaches2.What do we know about
25、 the city of Sydney from the passage?A.It is one of the largest cities in Australia.B.Sydney harbor is not far from the famous Opera House.C.There are many locals and tourists on its coast all the year round.D.There are few shark species in the waters off Sydney s beaches.3.About the injury of the b
26、oy we know that_.A.he was losing much blood when he was dragged outB.he was very nervous when he was sent to hospitalC.he may be in danger of losing his legD.he was injured in the right leg4.All the following are the causes of Australias sharks increasing except that_.A.environmental protection has
27、created a cleaner environmentB.a ban on commercial fishing has increased fish numbersC.many shark species are protected in Australian watersD.the film Jaws has made the Great White famous4、 Daniel Anderson, a famous psychologist, believes its important to distinguish televisions influences on childr
28、en from those of the family. We tend to blame TV, he says, for problems it doesnt really cause, overlooking our own roles in shaping childrens minds. One traditional belief about television is that it reduces a childs ability to think and to understand the world. While watching TV, children do not m
29、erely absorb words and images (影像). Instead, they learn both explicit and hidden meanings from what they see. Actually, children learn early the psychology of characters in TV shows. Furthermore, as many teachers agree, children understand far more when parents watch TV with them, explaining new wor
30、ds and ideas. Yet, most parents use an educational program as a chance to park their kids in front of the set and do something in another room. Another argument against television is that it replaces reading as a form of entertainment. But according to Anderson, the amount of time spent watching tel
31、evision is not related to reading ability. TV doesnt take the place of reading for most children; it takes the place of similar sorts of recreation, such as listening to the radio and playing sports. Things like parents educational background have a stronger influence on a childs reading. “A childs
32、reading ability is best predicted by how much a parent reads.” Anderson says.Traditional wisdom also has it that heavy television-watching lowers IQ (智商) scores and affects school performance. But here, too, Anderson notes that no studies have proved it. In fact, research suggests that its the other
33、 way around. “If youre smart young, youll watch less TV when youre older,” Anderson says. Yet, people of lower IQ tend to be lifelong television viewers. For years researchers have attempted to show that television is dangerous to children. However, by showing that television promotes none of the da
34、ngerous effects as conventionally believed, Anderson suggests that television cannot be condemned without considering other influences.1.By watching TV, children learn _.A.images through wordsB.more than explicit meaningsC.more about images than wordsD.little about peoples psychology2.An educational
35、 program is best watched by a child _.A.on his ownB.with other kidsC.with his parentsD.with his teachers3.Which of the following is most related to childrens reading ability?A.Radio-listeningB.Television-watchingC.Parents reading listD.Parents educational background4.Anderson believed that _.A.the m
36、ore a child watches TV, the smarter he isB.the younger a child is, the more he watches TVC.the smarter a child is, the less likely he gets addicted to TVD.the less a child watches TV, the better he performs at school5.What is the main purpose of the passage?A.To advise on the educational use of TV.B
37、.To describe TVs harmful effects on children.C.To explain traditional views on TV influences.D.To present Andersons unconventional ideas.5、About ten men in every hundred suffer from color blindness in some way. Women are luckier; only about one in two hundred is affected in this matter. Perhaps, aft
38、er all, it is safer to be driven by a woman!There are different forms of color blindness. In some cases a man may not be able to see deep red. He may think that red, orange and yellow are all shadows of green. Sometimes a person cannot tell the difference between blue and green. In rare cases an unl
39、ucky man may see everything in shades of green - a strange world indeed.Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called “cones”(人眼圆锥细胞). These help us to see in a bright light and to tell difference between colors. There a
40、re also millions of “rods”(棒条体), but these are used for seeing when it is near dark. They show us shape but no color.Some insects have favorite colors. Mosquitoes prefer blue to yellow. A red light will not attract insects, but a blue lamp will. In a similar way human beings also have favorite color
41、s. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors by day, and with the aid of the rods we can see shapes at night. One day we may even learn more about the invisible colors around us.1.The passage is mainly about _.A.color and its surprising effects.B.women
42、being luckier than menC.danger caused by color blindnessD.color blindness2.According to the passage, with the help of the “cones”, we can_.A.tell different shapesB.see in a weak lightC.kill mosquitoesD.tell orange from yellow3.Why do some people say it is safer to be driven by women?A.Women are more
43、 careful .B.There are fewer color-blind womenC.Women are fonder of driving than men.D.Women are weaker but quicker in thinking.4.Which of the statements about the color- blind is True?A.Not all of them have the same problem in recognizing color.B.None of them can see deep red.C.None of them can tell
44、 the difference between blue and green.D.All of them see everything in shades of green.6、Cooperation at work is generally seen as a good thing. The latest survey by the Financial Times of what employers want from MBA graduates found that the ability to work with a wide variety of people was what man
45、agers wanted most. But managers always have to balance the benefits of teamwork, which help ensure that everyone is working towards the same goal, with the dangers of “groupthink” when critics are reluctant to point out a plans drawbacks for fear of being kept out of the group. The disastrous Bay of
46、 Pigs invasion of Cuba in 1961 was a classic case of groupthink. Skeptics were reluctant to challenge John F. Kennedy, the newly elected American president.Modern communication methods mean that cooperation is more frequent. Workers are constantly in touch with each other via email messaging gr
47、oups or mobile calls. But does that improve, or lower performance? A new study by three American academics, tried to answer this question. They set a logical problem(designing the shortest route for a travelling salesman visiting various cities). Three groups were involved: one where subjects acted
48、independently; another where they saw the solutions posted by team members at every stage; and a third where they were kept informed of each others views only intermittently.The survey found that members of the individualist group reached the premier solution more often than the constant cooperators
49、 but had a poorer average result. The intermittent cooperators found the right result as often as the individualists, and got a better average solution. When it comes to ideal generation, giving people a bit of space to a solution seems to be a good idea. Occasional cooperation can be a big help: mo
50、st people have benefited from a colleagues brainwave or(just as often) wise advice to avoid a particular course of action.Further clues come from a book, Superminds, by Thomas Malone of the Massachusetts Institute of Technology. He says that three factors determine the collective intelligence of coo
51、perating groups: social intelligence(how good people were at rating the emotional states of others); the extent to which members took part equally in conversation(the more equal, the better); and the cooperation of women in the group(the higher, the better). Groups ranked highly in these areas coope
52、rated far better than others.In short, cooperation may be a useful tool but it doesnt work in every situation.1.The author cites the example of The Bay of Pigs invasion of Cuba in Paragraph 1 to _.A.prove that team players are skilled at communicationB.show that teamwork cannot always be beneficialC
53、.prove that critics are unwilling to challenge anybodyD.show the danger of groupthink is not very serious2.The underlined phrase “the intermittent cooperators” in Paragraph 3 refers to _.A.those who do not cooperate with each otherB.those who are seldom informed of others viewsC.those who cooperate
54、with others occasionallyD.the constant cooperators with a poor average result3.Which of the following factors makes a team cooperate better according to the fourth paragraph?A.Group members cooperating all the time.B.Group members in a good emotional state.C.Equal distribution of men and women.D.Equ
55、al participation in the communication.4.Which can be the best title of the passage?A.When Teamwork WorksB.What Teamwork Is AboutC.Why Teamwork OperatesD.A Useful Tool: Cooperation7、Researchers in Australia, who studied 1,500 people and their lifestyle, have found that having good friends can help yo
56、u live longer. An American study of 10,000 students, over a period of 35 years, also found that if you make more friends than the average person at school, youll receive a higher salary in later life. People need good social skills at work to manage people and work in a team successfully. These are
57、the same skills we use to make friends at school.On average, teenagers aged between 15 and 17 have 500 “friends” on their favourite social networking aite. Adults have 130. So if you believe this research, you might live for a long time and be very rich.However, according to Professor Robin Dunbar f
58、rom the University of Oxford, it probably wont make any difference. Dunbar studied the number of messages between users of a popular social networking website, each of whom had between 200 and 2,000 friends. He found that they always communicate with a maximum (最大量) of 150 people.Among these 150,Dun
59、bar believes that around five people are close friends. Youve mostly known them for a long time; they are probably old friends and you share all your good and bad experiences with them. Then there are ten more friends. Although theyre close to you, you may not keep in touch with them every week. Nex
60、t there are 35 people who you might spend time with because of a shared interest. You arent close. And finally, theres a large group of 100. You see or speak to these people at least once a year, but you dont know them well. Beyond this number, Bunbar says, its impossible to make any relationship me
61、aningful.If you have a lot of online “ friends”, try this experiment: First take away anyone you havent been in touch with for a year. Then remove people you cant remember and, finally, take away friends who you wouldnt mind losing touch with. How many do you have left? How many of these people are
62、actually good friends? According to the research, these are the only people that really matter.1.What are the studies mentioned in the first paragraph mainly about?A.The number of friends you should have.B.The advantages of having a lot of friends.C.Some social skills you may need at work.D.Some use
63、ful advice on how to make friends.2.According to the American study, the most popular students at school_.A.are likely to spend more money.B.may not be as popular at workC.seem to get better- paid jobs.D.will work harder in later years.3.What does the underlined part “this number” in paragraph 4 ref
64、er to ?A.10.B.35.C.100.D.150.4.What does the text mainly want to show?A.You need to spend more time with your friends.B.There is a lot of research on the influence of friends.C.Friends are sometimes more important than family.D.Its more important to have good friends.8、Lemurs are cute animals that l
65、ive on the island of Madagascar, the fourth-largest island in the world. Lemurs have big eyes, long noses, and long tails(except for the Indri) and live high in the trees of Madagascan forests. Lemurs are quite intelligent. They are the cousins of monkeys and look quite similar. They also swing thro
66、ugh the trees and live in family groups.There are different species of lemurs. Some lemurs (the Indri) sing like a whale, and some (the Sifaka) walk like a ballet dancer. Some lemurs are very small, like the Pygmy Mouse Lemur which weighs only 25-30 grams. Others, like the Indri, can weigh up to ten
67、 kilograms. Some lemurs are nocturnal, being awake at night and sleeping during the day, and some are not nocturnal but diurnal. Generally, the smaller lemurs are nocturnal, while the bigger ones are diurnal. All the species are unique to Madagascar.However, all of the lemurs are endangered species.
68、 Many species have already disappeared in the last few centuries. There are not many of lemurs left. People in Madagascar have been destroying the forests where lemurs live. Local people also hunt lemurs for food. Some of the local people see lemurs as bringers of bad luck, so they kill lemurs.At th
69、e moment, there are about 85 lemur species left. But many people fear that the number of species will fall quickly. Soon there may be no lemurs left if we do not make serious efforts to protect them.1.What are Lemurs a lot like?A.They are like human beings because they can dance ballet.B.They are li
70、ke whales because they sing loudly in a similar wayC.They are like mice because they are very small weighing only 25-30 grams.D.They are like monkeys because they swing through the trees and live in family groups.2.What does the underlined word “nocturnal” mean?A.Sleeping at night and being awake du
71、ring the day .B.Being awake at night and sleeping during the day.C.Being awake day and night.D.Sleeping day and night.3.What can we infer from this text?A.Lemurs can be killed because they may bring bad luck to people in Madagascar.B.People in Madagascar have realized they shouldnt destroy the fores
72、t where lemurs live.C.There is a good chance that lemurs will soon be extinct if people do nothing to help them.D.We should raise lemurs somewhere else besides Madagascar to keep them from dying out.4.Whats the best title of the text?A.Save Madagascars forestB.A Good Pet LemursC.Peoples FriendsD.Lem
73、urs of Madagascar 答案以及解析1答案及解析：答案：1.B; 2.D; 3.C; 4.A解析：1.题干意思为与传统的调查技术相比,eDNA更_。根据文章.She sees eDNA as a way to get answers more efficiently and with less destruction compared to traditional survey techniques.她认为与传统的调查方法相比,eDNA是一种更有效、更少破坏的方法。结合选项A项复杂的;B项环境友好型的;C项危险的;D项使人信服的,故答案为B2.题干意思为通过使用eDNA, 卡伦戈德
74、堡已经_。根据文章Ms Goldberg has used eDNA testing to confirm the local extinction (灭绝) of a leopard frog in the American state of Idaho.戈德堡女士已经用e-DNA技术测试证实了美国爱达荷州豹蛙的灭绝。结合选项A项他成功地钓到了许多鱼;B项发现了金树蛙的存在;C项记录了软壳海龟的扩散;D项证实了爱达荷州豹蛙的消失,故答案为D3.题干意思为我们能从最后一段推断出什么?根据文章Scientists working with the technology say they do n
75、ot expect robots to replace field biologists anytime soon.But the old-fashioned field work could soon be more targeted.使用这项技术的科学家们表示,他们预计机器人不会很快取代野外生物学家。但老式的野外工作可能很快就会更具针对性。可推断出老式的野外工作可能被取代,结合选项A项机器人将很快取代科学家;B项一些科学家反对使用eDNA;C项老式的野外工作可能会消失;D项许多生物学家不愿做野外工作。故答案为C4.题干意思为文章最好的标题是什么?根据文章Many science ficti
76、on stories tell about explorers arriving in a new world.The explorers then use some kind of high-tech device to test for breathable air or signs of life.But here on Earth, science fiction is becoming reality through a new sampling technology called environmental DNA, or eDNA for short.许多科幻小说都讲述了探险家到
77、达一个新世界的故事。然后,探险者使用某种高科技设备来测试可呼吸的空气或生命迹象。但在地球上,通过一种叫做环境DNA(简称eDNA)的新采样技术,科幻小说正变成现实。结合选项A项科幻小说在物种调查方面变为现实;B项生物学家在eDNA的帮助下探索太空;C项科学家们找到了检测生命迹象的方法;D项新技术出现在科幻小说中,故答案为A 2答案及解析：答案：1.C; 2.A; 3.B; 4.D解析：作者论述了年轻人和较长者学语言的不同,年长者不是没有能力学习语言而是需要付出较多。1.C推理判断题。作者说For children, language is their life.根据下文的They study
78、for thousands of hours every year, because they need to learn languages to become part of their communities.和young children can accumulate(积累) those hours over several years as they grow up.可知孩子们有大量的时间去学习和练习语言,故选C.2.A根据第三段Adults, however, often feel pressured to be perfect when learning a new langua
79、ge. This can discourage many people and make it even harder to learn a new language. 可知成年人学语言时有压力怕出错,这就阻碍了他们学语言。故选A.3.B根据文章第二、三、四段对比可知孩子和成年人学语言的目的不同、态度不同会导致学习结果的不同,故选B.4.D根据文章内容及最后一段Its never too late to learn a new language. If youre older, it may take more work, but it can be done. If youre a youn
80、g child, though, now is the time to step out and learn a new language! 可知年轻人和年龄较长的人都能学习语言,只不过年长者需多费时间,故选D. 3答案及解析：答案：1.C; 2.B; 3.A; 4.D解析：1.主旨大意题。短文开头句为主题句。2.细节理解题。从倒数第二段第二句However, there were . one on a navy diver in Sydney harbor,not far from the famous Opera House可知 B项正确。3.细节理解题。从第四段第二句He said th
81、e boy was bleeding heavily when he was brought to the shore.可知A项正确。4.细节理解题。从最后一段第二、三句There is a ban on commercial fishing in the harbor.A、B、C 三项均符合短文内容,只有D项除外。 4答案及解析：答案：1.B; 2.C; 3.D; 4.C; 5.D解析：1.事实细节题。根据第二段第三句“Instead,they learn both explicit and hidden meanings from what they see. 可知答案。2.推理判断题。根
82、据文章第二段倒数第二句“Furthermore, as many teachers agree,children understand far more when parents watch TV with them, explaining new words and ideas. ”可以推断出答案。3.事实细节题。根据文章第三段倒数第二句“Things like parents educational background have a stronger influence on a childs reading. 可知答案。4.推理判断题。根据文章第四段第四句Anderson所说“If y
83、oure smart young,youll watch less TV when youre older, 可以推断出答案。5.主旨大意题。整篇文章讲述的都是Anderson关于看电视对孩子的影响所提出的非传统的观点。故选D。 5答案及解析：答案：1.D; 2.A; 3.B; 4.A解析：色盲是什么原因引起的?色盲患者无法正确分辨颜色;而我们能分辨颜色和形状则是靠了眼睛里的两种细胞:视杆细胞和视锥细胞。 小题1:主旨大意题。本文主要讲了色盲的表现和人的眼睛看见形状和颜色的原因。故选D。小题2:细节理解题。由“These help us see in a bright day and tell
84、 the differences between colors.”可知视锥细胞可以让我们分辨不同的颜色。故选 A。小题3:细节理解题。由“Women are luckier, only about one in two hundred if affected in this matter. Perhaps, after all, it is safer to be driven by a woman. ”可知女性色盲的比例要少于男性,因此开车或许更安全。故选 B。小题4:细节理解题。由“There are different forms of color blindness. ”可知色盲患者的
85、类型并不相同。 故选A。 6答案及解析：答案：1.B; 2.C; 3.D; 4.A解析：1.推理判断题.根据第一段中的“But managers always have to balance the benefits of teamwork, which help ensure that everyone is working towards the same goal, with the dangers ofgroupthink when critics are reluctant to point out a plan s drawbacks for fear of being kept
86、out of the group. The disastrous Bay of Pigs invasion of Cubain 1961 was。classic case of ropes groupthink.”可知,经理们总是在团队合作的好处和群体思维的危险之间取得平衡,1961年灾难性的猪湾入侵古巴就是群体思维的危险性的经典案例,作者举这个例子就是为了证明团队合作不总是有益的,故B项正确。2.词义猜ail题。根据画线词前的The survey found that members of the individualist group reached the premier solutio
87、n more often than the constant cooperators but had a poorer average result.”可知,调查发现个人主义小组的成员比经常合作的小组成员更容易达成首要解决方案,此处是说偶尔性的合作者与个人主义者一样经常能找到正确的结果,并得到更好的平衡解,由此可知画线词词义为“偶尔合作的人”,故C项正确。3.细节理解题。根据最后一段中的the extent to which members took part equally in conversation (the more equal, the better)”可知,平等地参与交流能够让团
88、队合作得更好,故D项正确。4.主旨大意题。根据文章内容,特别是最后一段中的In short, cooperation may be a useful tool but it doesn t work in every situation.”可知,团队合作并非在所有情况下都有用,故A项正确。 7答案及解析：答案：1.B; 2.C; 3.D; 4.D解析：1.推理判断题.由第一段中的Researchers in Australiafound that having good friends can help you live longer和American studyfound that if y
89、ou make more friendsyoull receive a higher salary in later life澳大利亚的研究人员发现有好朋友可以帮助你活得更长美国研究发现如果你交更多的朋友你在以后的生活中会得到更高的薪水.可知,交友可以对人的身心健康和财富产生正面的影响,故这两项研究是有关拥有好友的好处.故选B.2.推理判断题.由第一段中的if you make more friendsyoull receive a higher salary in later life. People need good social skills at workthe same skill
90、s we use to make friends at school如果你交更多的朋友你在以后的生活中会得到更高的薪水.人们在工作中需要良好的社交技能就像我们在学校交朋友时一样,可知,美国一项研究发现在校受欢迎的人具有较强的社交能力,他们在今后可能会获得高薪工作.故选C.3.篇章结构题.文章第三、四段是对Dunbar教授关于交友数量研究的介绍.由第三段中的they alwayscommunicate with a maximum of 150 people和第四段中的Among these 150他们总是最多交流150个人.可知,Dunbar教授认为人们通常能与最多150个人进行交流,超过这个
91、数,有些联系则无实际意义了.故选D.4.主旨大意题.由最后一段作者的建议try this experiment:these are the only people that really matter试试这个实验:只有这些人才是真正重要的可知,本文通过研究告诉读者,朋友的质量要比朋友的数量更重要.故选D. 8答案及解析：答案：1.D; 2.B; 3.C; 4.D解析：1.细节理解题。根据第一段最后两句They are the cousins of monkeys and look quite similar. They also swing through the trees and live
92、 in family groups.可知，Lemurs就像猴子，因为它们在树间荡来荡去，成群结队地生活。故选D。2.同义猜测题。根据第二段中being awake at night and sleeping during the day, and some are not nocturnal but diurnal. 晚上醒着，白天睡觉，有些不是夜行性的，而是昼行性的。可知，画线词意思是夜间的。故选B。3.推理判断题。根据最后一段最后一句Soon there may be no lemurs left if we do not make serious efforts to protect them. 可知，如果人们不采取任何措施帮助狐猴，狐猴很有可能很快灭绝。故选C。4.主旨大意题。根据文章可知，本文讲述的是马达加斯加岛上的狐猴。故选D。