单选题Which of the following is the author most likely to agree to?

单选题In addition to the established energy sources such as gas, coal, oil and nuclear, there are a number of other sources that we ought to consider. Two of these are hydroelectric and tidal power. These two sources are (21) in that they are both renewable. (22) , hydropower is more widely used than tidal. In (23) , a substantial amount of electricity is already produced in HEP (hydroelectric power) stations worldwide, (24) tidal stations are still in the very early (25) of development. As far as geographical (26) is concerned, HEP projects are to be found on lakes and rivers, while tidal (27) are constructed only at river mouths where tidal (28) is great. Unfortunately these are (29) in number. At present HEP stations are found mainly in Norway, Canada, Sweden and Brazil, whereas tidal plants are in (30) in France, Russia and China. As regards capital (31) , both require very high investment. On the other hand, generating (32) are quite low in both cases. In fact, a large scale HEP plant is capable of producing power more (33) than conventional sources, such as coal, oil and nuclear plants. Tidal power also compares (34) with nuclear and oil-generated electricity, (35) the amount of money on production. (36) HEP stations, tidal constructions have a long life (37) . It is estimated that they can operate for over 100 years. With respect to (38) of supply, tidal stations (39) from HEP ones in that they often can only supply power (40) HEP stations, however, provide a constant supply of electricity.

单选题Questions 14-16 are based on the following conversation about a walkathon.

单选题He gave orders that the prisoners ______ free. [A]are set [B]were set [C]be set

单选题Although many governments try to convince their respective subjects that atomic energy is an acceptable alternative 1 the burning of fossil fuels, no government has taken the least trouble to explain the dangers. Maybe they are 2 them. 3 the reason, the public must learn by experience, even though this 4 may be catastrophic. While it is true that nuclear reactors do not produce visible smoke, it is certainly not 5 that they do not pollute. And the pollution they produce is much more insidious precisely because it is 6 . 7 inconvenient it may be for governments to publish all the facts, they have no moral excuse for not doing so, 8 they think they are acting in our best interest. At least some of the facts are known, even though they are not widely reported. Nuclear reactors produce radioactive water and gases in vast 9 .What 10 all this waste? It is 11 concrete tanks and stored on tank farms. It is 12 in disused salt mines. It is run into fractured rock. It is buried. It is 13 about in special trains. But even when dumped, it has to be kept 14 by sprinklers to stop it from boiling. And the contents of the tanks are, of course, extremely corrosive. The efforts of a fracture in the tank or a failure of the cooling system would be 15 . While every effort is made to 16 that radioactive wastes do not excape into the sea or 17 supplies of drinking water, such a leakage would be too horrible 18 contemplate. But even then , governments would presumably continue to belittle the hazards. It seems that 19 governments can get away with not telling the truth, they will continue to keep silent. Nevertheless the people 20 to know the full facts. Do you know what happens to the radioactive waste in your country? No? Well—find out!

单选题Everyone (21) of the President of the US (22) the most powerful man in (23) But when the representatives of the 13 former British colonies (24) to draw up the constitution of the new country (25) 1788, (26) of them were not sure whether they (27) to have a President at all. There were even (28) who (29) a king, (30) their successful war against the British king, George Ⅲ. The decision was in doubt (31) the last moment. One group wanted (32) for life, while (33) suggested that (34) not be a President, because a Committee would govern the country better; a third group (35) a President (36) term of office would last seven years but who could not stand for reelection, because they were afraid he would spend his time (37) votes at the next election. In the end they chose George Washington as President for four years and let him (38) for reelection because they trusted him. But they were (39) to make rules in case a future President (40) badly and these rules were used to get rid of President Nixon two hundreds years later.

单选题Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. London Cabbies Every city in the world has taxis to take tourists to interesting places. London is the only city in the world where taking a taxi is an {{U}} {{U}} 1 {{/U}} {{/U}}experience for tourists. This is {{U}} {{U}} 2 {{/U}} {{/U}}because of the special black cabs, which are found in no other country. But it is also because of the drivers themselves. {{U}} {{U}} 3 {{/U}} {{/U}}British people are famous for being polite and reserved, London cabbies are well-known {{U}} {{U}} 4 {{/U}} {{/U}}their willingness to talk. Some customers say that once the door shuts and the cab {{U}} {{U}} 5 {{/U}} {{/U}}off they are a captive audience. It is impossible to get the taxi driver to stop {{U}} {{U}} 6 {{/U}} {{/U}}. "They're self-confident and free-thinking," said Malcolm Linskey, the author of A History of Taxi Drivers in London. They are also expensive. London has the most expensive taxis of any city in the world except Tokyo. That's why Ken Livingstone, the Mayor of London, is {{U}} {{U}} 7 {{/U}} {{/U}}to make taxi drivers negotiate their fares with {{U}} {{U}} 8 {{/U}} {{/U}}before they take a ride. Drivers agree that their fares are expensive. That's because their black taxis {{U}} {{U}} 9 {{/U}} {{/U}}more than other cars, they say. And the customer is also paying for more driving expertise than anywhere else in the world. Before someone can {{U}} {{U}} 10 {{/U}} {{/U}}as a London taxi driver, that person has to pass a test {{U}} {{U}} 11 {{/U}} {{/U}}simply as "The Knowledge". This involves {{U}} {{U}} 12 {{/U}} {{/U}}the name and location of every street within six miles of a point in the exact centre of London. The trainee must also learn the exact location of every important building within these streets. Finally he or she must be able to use this knowledge to work out the {{U}} {{U}} 13 {{/U}} {{/U}}distance between any two destinations within this area. It can {{U}} {{U}} 14 {{/U}} {{/U}}up to three years to pass "The Knowledge". Every day it is possible to see {{U}} {{U}} 15 {{/U}} {{/U}}taxi drivers on the streets of London, taking careful notes of popular destinations before {{U}} {{U}} 16 {{/U}} {{/U}}the route to their next stop. Cab driving is a job often {{U}} {{U}} 17 {{/U}} {{/U}}down in families. Many taxi drivers take their children out in their spare time to memorize {{U}} {{U}} 18 {{/U}} {{/U}}they need to know when it is their turn to do "The Knowledge". London cabbies also have bigger brains. Recent research found that the part of the brain that remembers things was larger and more {{U}} {{U}} 19 {{/U}} {{/U}}in cab drivers. They have to fit the whole of London into their heads, so their brains grow bigger. So perhaps it is not {{U}} {{U}} 20 {{/U}} {{/U}}that taxi drivers have lots to say.

单选题 Questions 11 ～ 13 are based on the following conversation between a patient and a doctor. You now have 15 seconds to read Questions 11 ～ 13.

单选题Lacking a cure for AIDS, society must offer education, not only by public pronouncement but also in classrooms. Those with AIDS or those at high risk of AIDS suffer prejudice; they are feared by some people who find living itself unsafe, while others conduct themselves with a "bravado" that could be fatal. AIDS has afflicted a society already short on humanism, open-handedness and optimism. Attempts to strike it out with the offending microbe are not abetted by pre-existing social ills. Such concerns impelled me to offer the first university level undergraduate AIDS course, with its two important aims: To address the fact the AIDS is caused by a virus, not by moral failure of societal collapse. The proper response to AIDS is compassion coupled with an understanding of the disease itself. We wanted to foster (help the growth of) the idea of a humane society. To describe how AIDS tests institutions upon which our society rests. The economy, the political system, science, the legal establishment, the media and our moral ethical-philosophical attitudes must respond to the disease. Those responses, whispered, or shrieked, easily accepted or highly controversial, must be put in order if the nation is to manage AIDS. Scholars have suggested that how a society deals with the threat of AIDS describes the extent to which that society has the right to call itself civilized. AIDS, then, is woven into the tapestry of modern society; in the course of explaining that tapestry, a teacher realizes that AIDS may bring about changes of historic proportions. Democracy obliges its educational system to prepare students to become informed citizens, to join their voices to the public debate inspired by AIDS. Who shall direct just what resources of manpower and money to the problem of AIDS? Even more basic, who shall formulate a national policy on AIDS? The educational challenge, then, is to enlighten the individual and the societal, or public responses to AIDS.

单选题The northern Indians obtained wool from ______.

单选题What would happen to some countries if they don't have tourism?

单选题Believe it or not, airlines really are trying to do better. They promised to improve customer service last year 1 pressure from a Congress which was 2 stories of nightmare flights. So why is it that flying is getting 3 for so many passengers, 4 airlines arc spending billions of dollars to improve service, 5 in new equipment such as mobile check-in stations and portable phone banks so travelers can quickly 6 a flight when it is delayed or canceled? The fact is that air travel has 7 been such an annoyance, and customer complaints to the Transportation Department doubled in 1999 8 1998. It seems Mother Nature would 9 people by bus this year. An unusual run of bad weather, 10 long walls of thunderstorms, has crippled airports lately and led to widespread delays and cancellations. After similar problems last summer, the FAA promised to work more closely with airlines 11 weather slowdowns—for example, FAA and airline representatives now gather at a single location in Herndon, Va., to 12 the best way to allocate the available airspace. But even the FAA 13 the new initiative has fallen 14 of expectations, and many passengers complain that the delays seem 15 . Part of the problem is overcrowded planes. 16 the strong economy, U.S. airlines are expected to carry a record 665 million passengers this year, up 5 percent from last year. On 17 , planes are about 76 percent full these days, also a 18 . That"s good news for the Transport Department, which are profitably loading more passengers 19 each flight, and bad news for passengers, 20 irritations build rapidly in tight quarters.

单选题Which of the following most appropriately describes the author's logic of writing this passage ?

单选题From Paragraph 1 we can infer that ______.

单选题Which group in the following has been lobbying against consumer fireworks sales since 1910?