1. They agreed to settle the dispute by peaceful means.
A.solve
B.determine
C.untie
D.complete
A B C D
A
[解析] 画线词settle为动词，意为“解决”。A项solve意为“解决”；例：He finally solved the difficulty of transportation. 他最终解决了运输的难题。B项determine意为“决定”；例：Being determines consciousness. 存在决定意识。C项untie意为“解开”；例：He untied the ropes. 他解开了绳子。D项complete意为“完成”；例：She completed her degree in two years. 她在两年之内修完了她的学位。故选A。
2. The scientists began to accumulate a huge mass of data.
A.amass
B.put up
C.make up
D.clear up
A B C D
A
[解析] 画线词accumulate为动词，意为“积累”。A项amass意为“积累”；例：The capitalists amass great wealth by exploiting workers. 资本家通过剥削工人而积累了财富。B项put up意为“举起；建造”；例：He was putting up a new fence at his home. 他正在为自己家搭建新的篱笆墙。C项make up意为“编造”；例：She made up a funny story to explain her absence. 她编造了一个滑稽的故事来解释她的缺席。D项clear up意为“澄清”；例：I'd like to clear up two or three points. 我有两三点想澄清一下。故选A。
3. When Jack eventually overtook the last truck he pulled over to the inside lane.
A.skipped
B.passed
C.reached
D.led
A B C D
B
[解析] 画线词原形overtake为动词，意为“超过”。A项skip意为“跳跃；跳过；略过”；例：The parents want their child to skip to the second grade. 父母希望他们的孩子能跳级到二年级。B项pass意为“超过”；例：They became the first company in their field to pass the turnover of￡1 billion. 他们成为自己所在领域中首家营业额超过10亿英镑的公司。C项reach意为“到达”；例：We reached our destination at midnight. 我们午夜到达了目的地。D项lead意为“带领”；例：He took Tom's hand to lead him into the house. 他拉着汤姆的手，把他领进屋里。故选B。
4. Because of the popularity of the region, it is advisable to book hotels in advance.
A.possible
B.profitable
C.easy
D.wise
A B C D
D
[解析] 画线词advisable为形容词，意为“明智的”。A项possible意为“可能的”；例：It's possible for you to take a night train. 对于你来说，搭乘夜车是可以的。B项profitable意为“有利可图的”；例：The deal was quite profitable. 这宗买卖是有利可图的。C项easy意为“容易的”；例：John is easy to please. 让约翰高兴很容易。D项wise意为“聪明的”；例：Not everyone is born wise. 并不是每个人生下来就是聪明的。故选D。
5. Data from Voyager Ⅱ have presented astronomers with a puzzle about why our outermost planet exists.
A.problem
B.mystery
C.question
D.point
A B C D
B
[解析] 画线词puzzle为名词，意为“谜”。A项problem意为“问题”；例：We have lots of problems to solve. 我们有许多问题要解决。B项mystery意为“谜”；例：His death has remained a puzzle. 他的死至今还是个谜。C项question意为“问题”；例：The clever student asked the teacher an extremely difficult question. 那个聪明的学生问了老师一个极其难的问题。D项point意为“论点”；例：In this point, I agree with you. 在这一点上，我和你意见一致。故选B。
6. He rolled up his trouser leg to exhibit his wounded knee.
A.spread
B.open
C.show
D.examine
A B C D
C
[解析] 画线词exhibit为动词，意为“显示”。A项spread意为“延伸”；例：A dark red stain was spreading across his shirt. 一块深红色的污渍正在他的衬衫上漫延开来。B项open意为“打开”；例：He opened the drawer and took out a cheque. 他拉开抽屉，取出了一张支票。C项show意为“显示”；例：The commander showed his talent in defending the city. 司令官在保卫这座城市中表现出了他的才能。D项examine意为“检查；查看”；例：The police man examined the passport very carefully. 警察仔细地检查了护照。故选C。
7. Why can't you stop your eternal complaining!
A.everlasting
B.long
C.monotonous
D.lengthy
A B C D
A
[解析] 画线词eternal为形容词，意为“永久的”。A项everlasting意为“永久的”；例：We're all working for everlasting peace. 我们都在为永久的和平而奋斗。B项long意为“长的”；例：I had a long conversation with him today. 今天我跟他长谈了一次。C项monotonous意为“单调的”；例：His report was very monotonous. 他的报告很单调。D项lengthy意为“长的”；例：The guest professor gave US a very lengthy lecture this afternoon. 客座教授今天下午给我们作了一个很长的讲座。故选A。
8. This poem depicts the beautiful scenery of a small town in the south.
A.describes
B.draws
C.writes
D.introduces
A B C D
A
[解析] 画线词原形depict为动词，意为“描写”。A项describe意为“描写”；例：The police woman asked her to describe the thief. 那个女警察让她描述一下那个盗贼。B项draw意为“画”；例：The artist is drawing a picture of his home town. 那个美术家正在画他的家乡。C项write意为“写”；例：The beginners are able to write simple sentences. 初学者已经可以写简单句了。D项introduce意为“介绍”；例：Jack introduced Marry to John at the party. 在聚会上杰克把玛丽介绍给了约翰。故选A。
9. The telephone system is no longer operative.
A.flowing
B.moving
C.rotating
D.working
A B C D
D
[解析] 画线词operative为形容词，意为“运作的”。A项flowing意为“流动的”；例：His handwriting was flowing and graceful. 他的字写得流畅优美。B项moving意为“移动的”；例：It was a moving moment for me. 对我来说那是一个感人的时刻。C项rotating意为“转动的”；例：The house was full of these rotating beams of light. 屋子里满是旋转的光柱。D项working意为“运作的，工作的”；例：For doctors the working day often has no end. 医生常常没有下班的时候。故选D。
10. Hundreds of buildings were wrecked by the earthquake.
A.shaken
B.fallen
C.damaged
D.trembled
A B C D
C
[解析] 画线词原形wreck为动词，意为“毁坏”。A项shake意为“摇晃”；例：The house shakes when a train goes by. 火车开过时，房子会晃动。B项fall意为“倒下”；例：He lost his balance and fell backwards. 他失去平衡，向后倒去。C项damage意为“毁坏”；例：My car was completely damaged in the accident. 我的车在车祸中完全被毁坏了。D项tremble意为“颤抖”；例：The girl's lips started to tremble and then she began to cry. 女孩的嘴唇开始颤抖接着就哭了起来。故选C。
11. The latest car model embodies many new improvements.
A.consists of
B.includes
C.makes up
D.marks
A B C D
B
[解析] 画线词原形embody为动词，意为“显示；包含”。A项consist of意为“由……组成”；例：This panel consists of several young professors. 这个答辩委员会由几个年轻的教授组成。B项include意为“包含”；例：The plan includes many of your suggestions. 这项计划包含了许多你的建议。C项make up意为“组成……”；例：This team is made up of several old professors. 这个小组由几个老教授组成。D项mark意为“标志”；例：His death marked the end of an era. 他的死标志着一个时代的结束。故选B。
12. Thick clouds obscured the stars from view.
A.darkened
B.held
C.blackened
D.veil
A B C D
D
[解析] 画线词原形obscure为动词，意为“遮挡”。A项darken意为“使……变黑暗”；例：The bad news darkened their view of the situation. 这条坏消息使得他们对情况的看法变得很悲观。B项hold意为“保持……状态”；例：They held themselves in readiness for bad news. 他们对坏消息已经作好了准备。C项blacken意为“使……变黑”；例：Smoke has blackened the ceiling of the room. 烟已经把房间的天花板熏黑了。D项veil意为“挡住”；例：She made no attempt to veil the contempt in her voice. 她语气中毫不掩饰她的轻蔑。故选D。
13. The parents have to restrain their daughter from running out into the street.
A.disallow
B.reduce
C.prevent
D.confine
A B C D
C
[解析] 画线词restrain为动词，意为“阻止”。A项disallow意为“不允许”；例：Disallow clients from any access to hidden files. 禁止客户访问隐藏文件。B项reduce意为“减少”；例：Some fat people are trying to reduce their weight. 一些肥胖的人在试着减肥。C项prevent意为“阻止”；例：I simply can't prevent them from going their own way. 我压根无法阻止他们按照自己的方式行事。D项confine意为“监禁”；例：He was confined to prison for six years. 他在监狱里关了6年。故选C。
14. The discovery was sensational.
A.sexy
B.surprising
C.exceptional
D.exciting
A B C D
D
[解析] 画线词sensational为形容词，意为“有感觉的；令人激动的”。A项sexy意为“性感的”；例：She is beautiful and sexy. 她既漂亮又性感。B项surprising意为“出乎意外的”；例：Their achievements are surprising. 他们取得的成就是惊人的。C项exceptional意为“例外的”；例：This hot weather is exceptional for september. 9月天气这么热是不寻常的。D项exciting意为“令人激动的”；例：Headlines blazed the most exciting news. 报纸用大标题公布了这个最激动人心的消息。故选D。
15. After supper we usually take a stroll around the park for about an hour.
A.walk
B.rest
C.bath
D.breath
A B C D
A
[解析] 画线词stroll为名词，意为“散步”。A项walk意为“走路；散步”；例：He takes a walk only when he is free. 只有有空时他才散散步。B项rest意为“休息”；例：She takes a rest occasionally. 她偶尔也休息休息。C项bath意为“洗澡”；例：Try a hot bath with some relaxing bath oil. 用舒缓沐浴油洗个热水澡吧。D项breath意为“呼吸”；例：Jack took a deep breath and dived in. 杰克深深吸了一口气，然后潜入水中。故选A。
Living in space looks like lots of fun. You can do certain things in space (like floating around, or pushing huge objects) that you cannot do on earth. But being in space can do things to you, too. If you stay too long in a gravity-free environment, your bones could become weak, and a small spaceship just might annoy you after a while, because space travel could make you seasick! On July 4,1982, after seven days orbiting the earth, astronauts Thomas K. Mattingly and Henry W. Hartsfield returned home. Although not all of the experiments on board worked properly, the flight basically seemed to be a success except for one "little" thing. early in the flight, astronaut Hartsfield became "seasick". Thomas Mattingly, who is also a jet pilot and is highly resistant to motion sickness on earth, did much better. Mattingly sailed through space with a steady stomach. But no one knows why Hartsfield felt uneasy and Mattingly did not. So far it seems there is no reliable way to predict who will become motion sick in outer space and who will not. In all, at least four astronauts have suffered from space motion sickness. Russian and American scientists are working together to try to understand and solve the motion sickness. Space program officials worry that if so many highly-trained pilots get sick in space, what will happen when civilians start flying in the shuttle? Motion sickness is a disagreeable feeling that comes from the pitching, rolling, swaying, or just the moving of the object you are riding in or on. Symptoms of motion sickness include: dizziness, headache, a sinking feeling in the stomach, and vomiting. Why does motion make some people ill? Doctors believe that motion sickness is caused by a disturbance in the inner ear. Our ears do more than give us hearing. A part of the ears gives us a sense of balance and helps make us aware of whether we are right side up or upside down. If you know that you get carsick or seasick, what can you do? Speak to your doctor. There are certain medicines available that can help stop that uneasy feeling. But many of them can also make you sleepy. Usually they work best taken before you begin feeling ill. Some people also recommend water, ice cubes, mints, or plain toast. But these remedies do not always work for everyone. Perhaps, since motion sickness is such a big problem in outer space, researchers may soon find a way to cure the astronauts—and those of us who stay on earth.
1. Floating in space for too long a time may also do harm to one's lungs and heart.
A.Right
B.Wrong
C.Not mentioned
A B C
C
[解析] 第五段最后一句说“Symptoms of motion sickness include: dizziness, headache, a sinking feeling in the stomach, and vomiting. ”并没有说会对心脏和肺造成影响，故此题说法为“未提及”的。
2. At the end of the flight, Hartsfield became "seasick".
A.Right
B.Wrong
C.Not mentioned
A B C
B
[解析] 文章第二段只是说到“seasick in the early flight”在早期的飞行中会产生晕船，故此题说法为“错误”的。
3. Mattingly was much thinner than Hartsfield.
A.Right
B.Wrong
C.Not mentioned
A B C
C
[解析] 根据文章可知，文中并未说到谁比谁重，故此题说法为“未提及”的。
4. Russian and American scientists are working together to solve the problem of motion sickness in astronauts.
A.Right
B.Wrong
C.Not mentioned
A B C
A
[解析] 文中第四段第三句提到“Russian and American scientists are working together to try to understand and solve the motion sickness.”俄罗斯和美国的科学家们一起设法研究并解决晕船的问题。故此题说法为“正确”的。
5. Untrained civilians are more likely to suffer from motion sickness in a spacecraft.
A.Right
B.Wrong
C.Not mentioned
A B C
A
[解析] 文中第四段最后一句提到“Space program officials worry that if so many highly-trained pilots get sick in space, what will happen when civilians start flying in the shuttle?”受过训练的宇航员都会不舒服，更别说一般的人了。故此题说法为“正确”的。
6. The motion sickness some astronauts suffered from during space travel had been caused by the defective digestive system.
A.Right
B.Wrong
C.Not mentioned
A B C
B
[解析] 根据文章第七段第一句“Doctors believe that motion sickness is caused by a disturbance in the inner ear.”晕船的原因并不是因为消化系统。故此题说法为“错误”的。
7. People suffering from motion sickness during space travel can alleviate its symptoms by eating or drinking something.
1. While everybody enjoys fresh cut flowers around their house, few people know how to keep them for as long as possible. This may be done by keeping in mind a few simple facts. 2. An important thing to remember about cut flowers is that they are sensitive to temperature. For example, studies have shown that cut carnations(康乃馨) retain their freshness eight times longer when kept at 12℃ than when kept at 26℃. Keeping freshly harvested flowers at the right temperatures is probably the most important aspect of flower care. 3. Flowers are not intended by nature to live very long. Their biological purpose is simply to attract birds or insects, such as bees, for pollination(授粉). After that, they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide(二氧化碳), called respiration(呼吸), generates the energy the flower needs to give the flower its shape and color. The making of seeds also depends on this energy. While all living things respire, flowers have a high level of respiration. A result of all this respiration is heat, and for flowers the level of heat relative to the mass of the flower is very high. Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration, the sooner the flower dies. 4. How, then, to control the rate at which flowers die? By controlling respiration. How is respiration controlled? By controlling temperature. We know that respiration produces heat, but the reverse is also true. Thus by maintaining low temperatures, respiration is reduced and the cut flower will age more slowly. 5. Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to "drink" water that is dirty or otherwise polluted. Even when water looks and smells clean, it almost certainly contains harmful substances that can endanger the flowers. To rid the water of these unwanted substances, household chlorine bleach(含氯漂白剂) can be used in small quantities. It is recommended that 15 drops of chlorine bleach (at 4% solution) be added to each litre of water. The water and solution should also be replaced each day.
1. Paragraph 2 ______ A. Control of Respiration B. Beauty of Fresh Cut Flowers C. Role of Respiration D. Most Important Aspect of Flower Care E. Need for Clean Water F. Ways of Stopping Respiration
D
[解析] 第二段的第一句话说应该记住一件很重要的事就是鲜花对温度很敏感，接下来举了康乃馨的例子，最后一句话说保持鲜花在最适宜的温度是最重要的部分。所以D项Most Important Aspect of Flower Care概括了本段的内容，故选D。
2. Paragraph 3 ______
C
[解析] 第三段讲的都是呼吸对花的重要性，如通过呼吸作用，花获得保持外形和颜色以及产生花籽所需要的能量，但同时呼吸也是导致鲜花死亡的因素，所以C项Role of Respiration概括了本段内容，故选C。
3. Paragraph 4 ______
A
[解析] 第四段的开头提出了问题，如何控制花死亡的速度，接下去作者回答了这个问题，即控制呼吸作用。所以A项Control of Respiration概括了本段的内容，故选A。
4. Paragraph 5 ______
E
[解析] 第五段的开头提到保证花存活的另一个重要的因素是将花放在清水中，接下来说了具体的做法。所以E项Need for Clean Water概括了本段的内容. 故选E。
5. A few simple facts will help you keep cut flowers ______. A. by keeping its original shape and color B. in the life of cut flowers C. to produce carbon dioxide D. for as long as possible E. by controlling temperature F. to replace the water and solution every day
D
[解析] 根据第一段第二句话可知：一些简单的事实将会帮助你尽可能长久地保持剪下来的花，故选D。
6. Respiration plays a key role ______.
C
[解析] 根据第三段第四句可知，呼吸作用在产生二氧化碳的过程中起着重要作用，故选C。
7. The aging of cut flowers can be slowed down ______.
E
[解析] 从第四段第一句可知，通过控制植物的呼吸作用可以控制鲜花衰老的速度，故选E。
8. Another important way to prolong the life of cut flowers is ______.
A panic attack is a sudden feeling of terror. Usually it does not last long, but it may feel like forever. The cause can be something as normally uneventful as driving over a bridge or flying in an airplane. And it can happen even if the person has driven over many bridges or flown many times before. A fast heartbeat. Sweaty hands. Difficult breathing. A dizzy feeling. At first a person may have no idea what is wrong. But these can all be signs of what is known as panic disorder. The first appearance usually is between the ages of 18 and 25. In some cases it develops after a tragedy, like the death of a loved one, or some other difficult situation. In the United States, the National Institute of Mental Health says more than two million people are affected in any one-year period. The American Psychological Association says panic disorder is two times more likely in women than men. And it can last anywhere from a few months to a lifetime. Panic attacks can be dangerous—for example, if a person is driving at the time. The Chesapeake Bay Bridge in the state of Maryland is so long and so high over the water, it is famous for scaring motorists. There is even a driver assistance program to help people get across. Some people who suffer a panic attack develop a phobia(恐惧病), a deep fear of ever repeating the activity that brought on the attack. But experts say panic disorder can be treated. Doctors might suggest anti-anxiety or antidepressant(抗抑郁的) medicines. Talking to a counselor could help a person learn to deal with or avoid a panic attack. There are breathing methods, for example, that might help a person calm down. Panic disorder is included among what mental health professionals call anxiety disorders. A study published last week reported a link between anxiety disorders and several physical diseases. It says these include thyroid(甲状腺的) disease, lung and stomach problems, migraine headaches(偏头痛) and allergic(过敏的) conditions. Researchers at the University of Manitoba in Canada say that in most cases the physical condition followed the anxiety disorder. But, they say, exactly how the two are connected remains unknown.
1. Which is NOT a possible sign of panic disorder?
A.A fast heartbeat.
B.Sweaty hands.
C.A joyful feeling.
D.Difficult breathing.
A B C D
C
[解析] 文章第一段中“A fast heartbeat. Sweaty hands. Difficult breathing. A dizzy feeling. ”提到了A、B、D项，只有C项未提到，故选C。
2. Which is NOT mentioned as a possible cause of panic disorder?
4. Which is NOT a possible treatment for panic disorder?
A.Taking anti-anxiety or antidepressant medicines.
B.Repeating the activity that brought on the attack.
C.Talking to a counselor.
D.Learning special breathing methods.
A B C D
B
[解析] 文章第四段提到了A、C、D项中的治疗方法，只有B项没有提到，故选B。
5. Panic disorder is a kind of ______.
A.lung and stomach problem
B.migraine headache
C.anxiety disorder
D.allergic condition
A B C D
C
[解析] 文章第四段第五句“Panic disorder is included among what mental health professionals call anxiety disorders.” panic属于anxiety disorders的一种，故选C。
第二篇
Pop Music in Africa
Young musicians in African countries are creating a new kind of pop music. The tunes and the rhythms of their music combine African traditions with various forms of music popular today, such as hip-hop, rap, rock, jazz or reggae. The result is music that may sound familiar to listeners anywhere in the world, but at the same time is distinctly African. It is different also in another way- Many of the songs are very serious and they deal with important social or political issues in Africa today. Eric Wainaina is one of these African musicians. He grew up in Nairobi, Kenya, in a family of musicians. As a teenager, he listened to pop music from the United States, and later he moved to Boston to study at the Berklee College of Music. Now he has produced a CD in Kenya. Eric's most popular song, "Land of 'A Little Something' " is about Kenya's problem of bribery, or paying others for illegal favors. He wants people to listen to his songs and think about how to make Kenya a better place to live. Another musician who writes serious songs is Witness Mwaijaga from Tanzania. Her own experiences have helped her understand the suffering of many African women. At the age of fifteen she lost her home, but she was luckier than other homeless young people. She could make a living by writing songs and singing on the street. By the time she was eighteen years old, she had become a star. Her songs are written in rap or hip-hop style about the problems that she sees in Tanzania, especially AIDS and the lack of rights for women. Baaba Maal, from Senegal, also feels that pop music must go beyond entertainment. He says that in Senegal, storytellers have always been important people. In the past, they were the ones who kept the history of their people alive. Baaba believes that songwriters now have a similar responsibility. They must write about the world around them and help people understand how it could be better. The words of his songs are important, in fact. They speak of peace and cooperation among Africans, as well as the rights of women, love for one's family, and saving the environment. One of South Africa's most popular musicians is Brenda Fassie. She is sometimes compared to Madonna, the American pop star, because she likes to shock people in her shows. But she also likes to make people think. She became famous in the 1980s for her simple pop songs against apartheid. Now that apartheid has ended, her songs are about other issues in South African culture and life. To sing about these, she uses local African languages and a new pop style called kwaito. In recent years, people outside of Africa have also begun to listen to these young musicians. Through music, the younger generation of Africans are connecting with the rest of the world and, at the same time, influencing the rest of the world.
1. This passage is about how African pop music is ______.
A.usually about love and romance
B.more serious than most pop music
C.popular with young people in Africa
D.mostly written just for entertainment
A B C D
B
[解析] 由第一段最后一句可以得出答案，“It is different also in another way: Many of the songs are very serious and they deal with important social or political issues in Africa today.”故选B。
2. For people outside of Africa, African pop music is ______.
A.the same as other pop music
B.not usually very interesting
C.entirely strange to them
D.both familiar and different
A B C D
D
[解析] 从第一段第三句可以得出答案，“The result is music that may sound familiar to listeners anywhere in the world, but at the same time is distinctly African.”故选D。
3. The musicians mentioned in this passage all ______.
A.write about serious problems
B.studied in the United States
C.lost their homes at a young age
D.write songs in a new pop style
A B C D
A
[解析] 总览全文可以得出结论。本文通篇都在讲有关社会和政治等严肃主题的音乐，故选A。
4. Eric Wainaina ______.
A.prefers to sing in English
B.listened to traditional music
C.studied music in Boston
D.performs only in the United States
A B C D
C
[解析] 由第二段第三句可以得出答案，“he listened to pop music from the United States, and later he moved to Boston to study at the Berklee College of Music”，A、B、D项均有错误，故选C。
5. Witness Mwaijaga writes about the problems of women partly because ______.
A.she has had a difficult life herself
B.there are many problems in Tanzania
C.she has had an easy life herself
D.there are no other women singers
A B C D
A
[解析] 答案在第三段的第二句，“Her own experiences have helped her understand the suffering of many African women.”可见她是有亲身经历的，故选A。
第三篇
The Renewable Energy Sources
Today petroleum provides around 40% of the world's energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel. Natural gas reserves could plug some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. We could fast reach an energy crisis. We need to rapidly develop sustainable solutions to fuel our future. Less-polluting renewable energy sources offer a more practical long-term energy solution. They may benefit the world's poor too. "Renewable" refers to the fact that these resources are not used faster than they can be replaced. Hydroelectric power is now the most common form of renewable energy, supplying around 20% of world electricity. China's Three Gorges Dam, which has just been completed, is the largest ever. At five times the size of the US's Hoover Dam, its 26 turbines will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China's entire electricity demand. In 2003, the first commercial power station to harness tidal currents in the open sea opened in Norway. It is designed like windmill, but others take the form of turbines. As prices fall, wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world's entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally benign—they can interfere with radar and leave a significant ecological footprint, altering climate and lilling sea birds. Migrating birds may have more luck avoiding them. Scotland is building Europe's largest wind farm, which wil power 200,000 homes. The UK's goal is to generate one fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable.
1. What are the energy resources that are not renewable according to the article?
C.is the largest of all the hydroelectric dams in the world
D.supplies around 20% of the world electricity
A B C D
C
[解析] 文章第二段第二句明确告诉我们答案：“China's Three Gorges Dam, which has just been completed, is the largest ever.”故选C。
3. Which is the country with the first commercial power station that makes use of ocean currents produced by tides?
A.China.
B.Norway.
C.England.
D.America.
A B C D
B
[解析] 文章第三段第一句明确指出，挪威首次运营利用潮汐进行发电的商业电站：“In 2003, the first commercial power station to harness tidal currents in the open sea opened in Norway.”故选B。
4. Which of the following statements is TRUE of wind power?
A.There is plenty of wind to provide the world's entire energy needs.
B.It is the most rapidly growing type of electricity production.
C.It may not be reliable.
D.All of the above.
A B C D
D
[解析] 文章第四段提到了A、B、C的内容，故选D。
5. According to the article, resources such as wind ______.
A.are sustainable but not replaceable
B.are renewable so sustainable
C.are sustainable so renewable
D.are irreplaceable
A B C D
B
[解析] 这个问题的理解依赖对整篇文章内容的理解。文章第一段最后一句话说“'Renewable' refers to the fact that these resources are not used faster than they can be replaced.”其意思是：再生能源消耗的速度很慢，以至于不会被替代。所以这种能源是sustainable，故选B。
Modern computer technology has made a new kind of human relationship possible: online friendship. 1 Are online friendships as beneficial as face-to-face friendships? What are the advantages and disadvantages of having virtual friends? Can people form strong bonds online? Today these questions are the subject of lively debate. Some people believe that the Internet is the best way to make new friends. It's convenient, it's fast, and it allows to make contact with different kinds of people from all over the world. When you use social networking websites and chat rooms, you can easily find people with interests and hobbies similar to yours. Information updates and photos add to the experience. Making friends on the Internet is especially good for shy people who feel uncomfortable in social situations. It's often easier to share thoughts and feeling online. 2 They can make people feel less lonely and help them solve problems. Although the Internet can encourage friendship, it has a major disadvantages. 3 Online friends only tell you what they want you to know. They sometimes exaggerate their good qualities and hide the less positive ones, so you can't be sure of what they really like. That is why you should not give personal information to anyone online unless you're totally sure of who that person is. Can online friendship be as meaningful as face-to-face ones? There are different points of view. Researchers at the University of Southern California surveyed 2,000 households in the United States. The results showed that more than 40 percent of participants feel "as strongly about their online buddies" as they do about their "offline" friends. 4 In contrast, there are many people who believe that it's not possible to have deep relationships with online friends. A young Indian software engineer, Lalitha Lakshmipathy, says, "it's good to feel connected with many people, but all my e-buddies are not necessarily my close friends." 5 They say that it's hard to develop feelings of trust and connection when you don't share experiences in person. People continue to express different opinions about online friendship. However, most of them would agree that virtual friendships must not replace face-to-face friendships. As one life coach says, "A social networking site should only be the 'add on' in any relationship." A. In addition, virtual friends can offer emotional support. B. When you're not face to face, it's much easier to deceive people. C. Many people would agree. D. Researchers also found that it's not unusual for online friends to become face-to-face friends. E. Online friends may be of help in many ways. F. Online friends, or virtual friends, are people who have become acquainted with each other through the Internet.
It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to 1 people frequently. But these fish perform a 2 service for earth's waters and for human beings. Yet business and sport fishing are threatening their 3 . Some sharks are at risk of disappearing from 4 . Warm weather may influence both fish and shark activity. Many fish swim near coastal areas 5 their warm waters. Experts say sharks may follow the fish into the same areas, 6 people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person 7 a sea animal, such as a seal or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up. Those are the 8 when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack. A shark has an extremely good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and 9 produced by animals. These powerful 10 help sharks find their food. Sharks eat fish, any 11 sharks, and plants that live in the ocean. Medical researchers want to learn more about the shark's body defense and immune 12 against disease. Researchers know that sharks 13 quickly from injuries. They study the shark in hopes of finding a way to fight human disease. Sharks are important for the world's 14 . They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too 15 . This protects the plants and other forms of life that exist in the oceans.
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