题目内容
5.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 1956when 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 neighbours--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 150human 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 200miles a year.The countries that lie in their path are naturally worried because it looks as if nothing can be done to stop them.
32.The results of the South American experimentD.
A.have caused a serious trouble
B.have proved to be wrong
C.are highly thought of
D.are not yet certain
33.The experiment mentioned in this passage was designed toA.
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
34.Which of the following may be the cause of the new bees'attacking personalities?C
A.Their production of honey.
B.Their hard work.
C.Their living environment.
D.Their bad temper.
35.The last paragraph implies thatB.
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.
分析 本文是一篇科教类阅读,主要以巴西蜜蜂试验的例子来说明有时候科学实验出差错可能会造成灾难性的或者是有麻烦的后果.
解答 32---35 DACB
32题答案:D考查细节推理,根据第一段的Whether its final consequences will cause serious damage or nothing more than a small trouble still remains to be seen.它最终的结果是否会引起严重的损伤或只不过是一个小问题还有待发现.故本题答案为D选项.
33题答案:A考查细节推理,根据第二段的The story began in 1956when an American scientist working in Brazil decided to solve the problem of increasing the productivity of that country's bees.故事开始于1956年,一位在巴西工作的美国科学家决定解决增加该国蜜蜂产量的问题.可知本题答案为A选项.
34题答案:C考查细节推理,根据第三段的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.由于某种目前还未知的原因(但可能是环境的结果),新的蜜蜂开始形成极强的攻击个性.可知本题答案为C选项.
35题答案:B考查细节推理,根据最后一段的The countries that lie in their path are naturally worried because it looks as if nothing can be done to stop them.
位于它们(蜜蜂)路上的国家自然而然会担忧因为看起来似乎没什么可以阻止它们(通过他们的国家).可知本题答案为B选项"蜜蜂会在更多的国家带来问题".
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
A. | somehow | B. | anyway | C. | therefore | D. | though |