单选题In the above passage, the author's main purpose is to ______.

单选题What'sthelengthofthebridgeacrosstheMavudayerRiver?A.600inches.B.600feet.C.300inches.D.15meters.

单选题Questions 11-13 are based on the following conversation.

单选题HowwillthemangettoSanFrancisco?

单选题WhatkindofweatherisnormalforMarch?A.Cold.B.Veryhot.C.Coolerthanthatday.D.Drierthanthatday.

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单选题Large companies need a way to reach the saving of the public at large. The same problem, on a smaller scale, faces practically every company trying to develop new products and create new jobs. There can be little prospect of raising the sort of sums needed from friends and people we know, and while banks may agree to provide short-term finance, they are generally unwilling to provide money on a permanent basis for long-term projects. So companies turn to the public, inviting people to lend them money, or take a share in the business in exchange for a share in future profits, This they do by issuing stocks and shares in the business through The Stock Exchange. By doing so they can put into circulation the savings of individuals and institutions, both at home and oversees. When the saver needs his money back, he does not have to go to the company with whom he originally placed it. Instead, he sells his shares to some other saver who is seeking to invest his money. Without hospitals, roads, electricity, telephones, railways, this country could not function. All these require continuous spending on few equipment and new development if they are to serve us properly, requiring more money than is raised through taxes alone. The Government, local authorities, and nationalized industries therefore frequently need to borrow money to finance major capital spending, and they, too, come to The Stock Exchange. There is hardly a man or woman in this country whose job or where standard of living does not depend on the ability of his or her employers to raise money to finance new development. In one way or another this new money must come from the savings of the country. The Stock Exchange exists to provide a channel through which these savings can reach those who need finance.

单选题Wei Feng and Ann is playing in the zoo. Wei Feng: Look, Ann! What's that monkey doing? Ann: He is (41) (42) a ball. Wei Feng: He is (43) the ball (44) his friends. Ann: Ha, ha! His friends can't (45) it. Wei Feng: Where's the ball now? Ann: Look! It's over there, on the hill. Wei Feng: They're (46) it. Ann: No, they aren't. They can't reach it. Wei Feng: Look at that little monkey. He is climbing (47) the hill. The ball is in his hands. Ann: What's he going to do with the ball? He doesn't want to give (48) his friends. Wei Feng: Right. They're (49) (50) him. They want to get the ball. They're running all the time.

单选题Scientists have agreed that there is a kind of gene which results in people's violence who were ill-treated in their childhood. This could help to explain why some people who once suffered from miserable childhood are able to lead normal life while others become violent. But another argument was raised. It was reported that one form of a gene in people's brain made it more likely for them to turn to violence—but only when they have undergone cruelty in their childhood. The researchers collected the life histories of 420 boys, all of whom were born in Los Angles in 1980. Among them, 145 boys had been maltreated in their first 8 years and 29 were badly ill-treated. Among the 145 kids, 49 had a less active variant(变异体) of a gene and 96 had this more active variant. The probability of those 49 boys being in difficulty is twice as much as that of the other group. Prof. Williams believes that up to now a "violence" gene has not been discovered. Boys with the less active variant not maltreated during their childhood can have normal lives. " It is a very common phenomenon. One-fourth to one-third of us have this variant," he said, "So the gene doesn't make much difference. It doesn't lead to any trouble unless we are abused. " The gene may show the capability of tolerating mental pressure as well. However, the discovery brings about the argument that people with the less active variant can be great dangers to our society. "This research will easily cause people to solve social issues with the help of medical treatment." said David Johnson of the USA Gene Association.

单选题 Questions 15 to 18 are based on a conversation on juvenile crime.

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单选题WherewasJerrygoingwhenJackmether?

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单选题{{I}}Questions 22 ～ 25 are based on the following monologue.{{/I}}

单选题One of the aims of the passage is to ______.

单选题The writer of the text wants to tell people not to ______.