Question

 

      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.

      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.

1.The results of the South American experiment              .

     A. have caused a serious trouble        B. have proved to be wrong

     C. are not yet certain                 D. are not important

2.The experiment mentioned in this passage was designed to              .

     A. increase the amount of honey in Brazil      B. make Brazilian bees more easy-going

     C. increase the number of bees in Brazil       D. make African bees less active

3.Which of the following may be the cause of the new bees' attacking personalities?

     A. Their production of honey.        B. Their hard work.

     C. Their living environment.         D. Their bad temper.

4.The last paragraph implies that             .

     A. the bees have been driven to Central and North America

     B. the bees may bring about trouble in more countries

     C. the bees must be stopped from moving north

     D. the bees prefer to live in Brazil

 

Answer 1

【答案】

1.A

【解析】从第一段和最后一段得知。

【考点】细节理解题

【易错点】考生若不注意选项的时态，容易误选AB.

【备考建议】近年来出现一些内容一样但时态错误的选项，要引起注意。另外，阅读文章时，要重读第一段和留意总结性的句子和篇章结构，对把握整篇文章的意思有明显的指导作用。

2.A

【解析】设计那个实验的真正目的是增加蜂蜜的产量而不是数量，在第二段结尾找到答案。

【考点】细节理解题

【易错点】考生受文章开头部分的细节影响，会误选C，。

【备考建议】在把握文章细节时，要注意上下文作者描写思路的变化，别掉进陷阱。

3.C

【解析】从第三段第二句得出答案。

【考点】细节理解题

【易错点】本题区分度低，难度不大。

4.B

【解析】从全文和文章的最后一句可以推断出答案。

【考点】推理判断题

【易错点】文章没有提及bees 被driven,小心别误选A.

【备考建议】做题时要留意imply, infer等字眼，并在原文的基础上作出合理的推理判断。