Scientific experiments can sometimes go wrong and when they do the results may range from the disastrous to the troubling. One such experiment took place in South America about fifty years ago. Whether its final consequences will cause serious damage or nothing more than a small trouble still remains to be seen.
The story began in 1956 when an American scientist working in Brazil decided to solve the problem of increasing the productivity of that country’s bees. He imported a very active type of African bee from Tanzania and mated (交配)it with the more easy-going native variety to produce a new kind of bees. The new bees worked harder and produced twice as much honey. It seemed that Professor Kerr, for that was the scientist's name, had a total success on his hands.www..
Then things began to go wrong. For some reason as yet unseen, but perhaps as a result of something in their environment, the new bees began to develop extremely attacking personalities. They became bad-tempered and easy to be angry, attacked the native bees and drove them from their living places.
But worse was to follow. Having taken over the countryside, the new bees, with their dangerous stings (叮) , began to attack its neighbors -- cats, dogs, horses, chickens and finally man himself. A long period of terror began that has so far killed a great number of animals and about 150 human beings.
This would have been bad enough if the bees had stayed in Brazil. But now they are on the move, heading northwards in countless millions towards Central and North America, and moving at the alarming speed of 200 miles a year. The countries that lie in their path are naturally worried because it looks as if nothing can be done to stop them.
【小题1】 The results of the South American experiment .A．are not yet certainB．have proved to be wrongC．have caused a serious troubleD．are not important【小题2】 The experiment mentioned in this passage was designed to .A．make African bees less activeB．make Brazilian bees more easy-goingC．increase the number of bees in BrazilD．increase the amount of honey in Brazil【小题3】 Which of the following may be the cause of the new bees' attacking personalities?A．Their production of honey.B．Their living environment.C．Their hard work.D．Their bad temper.【小题4】 The last paragraph implies that .A．the bees have been driven to Central and North AmericaB．the bees must be stopped from moving northC．the bees may bring about trouble in more countriesD．the bees prefer to live in BrazilA
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(答案→)A
解析：
试题解析：本文通过一个实例：引进新的蜜蜂以增加蜂产品的同时带来的不仅是给巴西还有其他的国家带来困扰来说明：科学实验有时会不科学。
【小题1】细节理解题.根据第一段最后一句话Whether its final consequences will cause serious damage or nothing more than a small trouble still remains to be seen.最终的结果是将导致严重的损害还是仅仅是一个小问题还有待于研究，所以Ａ正确
【小题2】细节理解题。根据第二段第一句话 The story began in 1956 when an American scientist working in Brazil decided to solve the problem of increasing the productivity of that country’s bees.由此可以判断出Ｄ正确。
【小题3】细节理解题。根据第四段开头 But worse was to follow. Having taken over the countryside, the new bees, with their dangerous stings (叮) , began to attack its neighbors -- cats, dogs, horses, chickens and finally man himself.可以判断出是环境变了，导致了这些问题，所以Ｂ正确。
【小题4】推理判断题。根据最后一段第一句话This would have been bad enough if the bees had stayed in Brazil. But now they are on the move, heading northwards in countless millions towards Central and North America, and moving at the alarming speed of 200 miles a year.可以推断出这些蜜蜂会给更多的国家带来困扰，所以Ｃ正确。