阅读理解

　　The motor vehicle has killed and disabled more people in its brief history than any bomb or weapon ever invented．Much of the blood on the street flows essentially from uncivil behavior of drivers who refuse to respect the legal and moral rights of others．So the killing on the road may be regarded as a social problem．

　　In fact, the enemies of society on wheels are rather harmless people－－just ordinary people acting carelessly, you might say．But it is a general truth both of law and common morality that carelessness is no excuse when one’s actions could bring death or damage to others．A minority of the killers go even beyond carelessness to total negligence(　　)．

　　Researchers have estimated that as many as 80 percent of all automobile accidents can be attributed to the psychological condition of the driver．Emotional upsets can distort(歪曲)drivers’ reactions, slow their judgment, and blind them to dangers that might otherwise clear．The experts warn that it is necessary for every driver to make a conscious effort to keep one’s emotions under control．

　　Yet the irresponsibility that accounts for much of the problem is not confined to drivers, Street walkers regularly violate traffic regulations, they are at fault in most vehicle walker accidents, and many cyclists even believe that they are not subject to the basic rules of the mad．

　　Significant legal advances have been made towards safer driving in the past few years．Safety standards for vehicle have been both at the point of manufacture and through periodic mad-worthiness inspection．In addition, speed limits have been lowered．Due to these measures, the accident rate has decreased．But the accident experts still worry because there has been little or no improvement in the way drivers behave．The only real and lasting solution, say the experts, is to convince people that driving is a skilled task requiring constant care and concentration．Those who fail to all these things present a threat to those with whom they share the mad．

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根据短文内容选择可以填入空白处的最佳答案。

　　One day Mozart saw an old blind street-performer playing 　　1　　 violin in the street corner 　　2　　 a hat in front of him．He found out the old man was 　　3　　 one of his compositions．The old man played for 　　4　　 but still nobody put 　　5　　 money into his hat．Mozart asked the old man,“Do you often play compositions by Mozart?”“Yes, 　　6　　,”answered the old man．“Now, everybody knows Mozart and 　　7　　 his music．”“Do you 　　8　　 a living by playing the violin?”The old man said he 　　9　　．Mozart took 　　10　　 the violin from the old man and began to play．

　　He played so well 　　11　　 all the passers-by stopped 　　12　　 to the wonderful music and soon the old man felt very 　　13　　 that the man could play so well．He asked Mozart,“Who are you, sir?”“Your colleague, a poor 　　14　　 like you．”

　　Then Mozart gave the 　　15　　 back to the old man and went away．

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