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】從第一段和最后一段得知。

【考點】細節(jié)理解題

【易錯點】考生若不注意選項的時態(tài)，容易誤選AB.

【備考建議】近年來出現(xiàn)一些內(nèi)容一樣但時態(tài)錯誤的選項，要引起注意。另外，閱讀文章時，要重讀第一段和留意總結(jié)性的句子和篇章結(jié)構(gòu)，對把握整篇文章的意思有明顯的指導(dǎo)作用。

2.A

【解析】設(shè)計那個實驗的真正目的是增加蜂蜜的產(chǎn)量而不是數(shù)量，在第二段結(jié)尾找到答案。

【考點】細節(jié)理解題

【易錯點】考生受文章開頭部分的細節(jié)影響，會誤選C，。

【備考建議】在把握文章細節(jié)時，要注意上下文作者描寫思路的變化，別掉進陷阱。

3.C

【解析】從第三段第二句得出答案。

【考點】細節(jié)理解題

【易錯點】本題區(qū)分度低，難度不大。

4.B

【解析】從全文和文章的最后一句可以推斷出答案。

【考點】推理判斷題

【易錯點】文章沒有提及bees 被driven,小心別誤選A.

【備考建議】做題時要留意imply, infer等字眼，并在原文的基礎(chǔ)上作出合理的推理判斷。