首页
登录
职称英语
[originaltext] Scientific experiments can sometimes go wrong and when they d
[originaltext] Scientific experiments can sometimes go wrong and when they d
游客
2024-02-20
27
管理
问题
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 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, 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.
Questions 33 to 35 are based on the passage you have just heard.
33. What do we learn about the results of the South American experiment?
34. For what purpose was the experiment mentioned in this passage designed?
35. Which may be the cause of the new bees’ attacking personalities?
选项
A、They are not important.
B、They are not yet certain.
C、They have been proved to be wrong.
D、They have caused a serious trouble.
答案
B
解析
选项中的They,important,not yet certain,trouble等表明,本题可能考查对They的看法。短文首段总述了科学实验有时会出错,从而导致灾难或麻烦。接着以南美蜜蜂试验论证上述观点。从短文的final consequences…remains to be seen可知,这次试验的结果是严重的灾难还是一次小麻烦还不能断定,故答案为[B]。
转载请注明原文地址:https://tihaiku.com/zcyy/3467180.html
相关试题推荐
[originaltext]Duringthe19thcentury,women’seducationwasnotconsidered
[originaltext]Duringthe19thcentury,women’seducationwasnotconsidered
[originaltext]W:Youdon’tlooktoowell.Maybeyoushouldtakethedayofffro
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]M:Excuseme!I’dliketoseeMr.Jonesthisafternoon,please.
[originaltext]OnJune17,1744,theofficialsfromMarylandandVirginiahel
[originaltext]OnJune17,1744,theofficialsfromMarylandandVirginiahel
随机试题
InthefirstyearorsoofWebbusiness,mostoftheactionhasrevolvedaro
Everythingisingreat______inthecountriessufferingfromthewar.A、askB、re
You________yesterdayifyouarereallyseriousaboutthejob.A、oughttocomeB、o
Ifx≥9andy≤5,thenitmustbetruethatA、xy≤-45B、x-y≥4C、x-y<4D、x+y≥9E、xy
A.顺时针转动 B.逆时针转动 C.无转动 D.不能确定
下述哪项是生长激素缺乏性侏儒的特征性表现A.身材比例异常 B.生长停滞 C.
男性,45岁,体胖,平素食欲佳,近个月饮水量逐渐增多,每日约5000ml左右,尿
境内分包装从印度进口的化学药品,其注册证证号的格式应为A.ZC+四位年号+四位顺
单位实施新工艺、新技术或使用新设备、新材料时应对从业人员进行有()的安全生
110kV、6kV和35kV系统的最高工作电压分别为126kV、7.2kV、40
最新回复
(
0
)