新疆成考英语完型填空四

完形填空(共15小題;每題2分，共30分。)

通读下面的短文，掌握其大意。从每小题的四个选项中选出可填入相应空白处的最佳选择，并把它前面的大写字母填入右边括号里。

Scientists in the UK have announced that the piranhafish's reputation 21 a fearsome 22may well not be deserved. The fish, which is found in the Amazon in Brazil, have been 23as

deadly carnivores(食肉动物) that work in shoals to overwhelm their prey and strip it of its flesh in seconds.

However, experts 24 St Andrews University say that piranhas are omnivores(杂食动物) that

mainly eat fish, plants and insects. They form big groups not to hunt but to defend 25against

other predators, according to the team.

"Previously it was thought piranhas shoaled as it26them to form a cooperative hunting group," said Professor Anne Magurran. " 27 , we have found that it is primarily a defensive behavior. "

Piranhas can be attacked by animals 28 dolphins, caimans and large fish, so forming a shoal is a good way of 29being killed. Piranhas of 30age stay in the middle of the group for

31and the 32 of the shoal differs according to the level of 33When the water level is

34 , the fish form small groups as there is space to escape, but when the water level drops, they form large groups as protection 35 predators.

21.() [单选题] *

A. as(正确答案)

B. as if

C. as though

D. since

答案解析：看22题的四个选项可以断定这里指食人鱼是什么样的杀手。应当选择具有“作为”含义的词。选项A是正确的:作为可怕的杀手。

22. () [单选题] *

A. kill

B. killer(正确答案)

C. murderer

D. murder

答案解析：Killer杀手,murderer凶手。二者的区别在于前者泛指杀人,后者强调有预谋的行凶。故，B答案正确

23. () [单选题] *

A. told

B. saying

C. describing

D. portrayed(正确答案)

答案解析：Tell告诉,say说,describe描述,portray描绘。文中have been表明是被动语态,应选择过去分词;根据上下文,这种鱼已被描绘成致命的食肉动物。选项D是正确的。

24.() [单选题] *

A. out

B. with

C. from(正确答案)

D. by

答案解析：表示“来自于哪儿”应用介词from。此处意为来自圣安德鲁斯大学的专家。选项c是正确的

25.() [单选题] *

A. them

B. themselves(正确答案)

C. it

D. itself

答案解析：解析：根据上下文：食人鱼组成巨大的群体并不是为了猎取，而是为了自我保护以抵御其他的捕猎者。因此，这里应选用具有“它们自己”含义的词。选项B是正确的。

26.() [单选题] *

A. able

B. is able

C. enable

D. enabled(正确答案)

答案解析：Able能够,应与be连用;be able能;enable使能够;enabled是enable的过去式。根据上下文,这里讲的是以前人们对食人鱼的看法,应用过去时。食人鱼的群体活动可以赋予它们合作捕猎的能力。选项D

27.() [单选题] *

A. Thus

B. However(正确答案)

C. Suddenly

D. Therefore

答案解析：从“我们发现……”一句看出,与以前人们的看法不同,食人鱼的群体活动只是为了保护自己。应选择表示与前句意义相反的转折词。选项B

28.() [单选题] *

A. such

B. example

C. like(正确答案)

D. as such

答案解析：食人鱼会受到其他动物的攻击。这里列举几种动物,应用like,或such as。选项C是正确的。

29. () [单选题] *

A. prevent

B. preventing

C. avoid

D. avoiding(正确答案)

答案解析：食人鱼群体活动的目的是避免被杀戮(being killed)。Prevent sb.from doing sth.防止某人做某事，该词通常与from连用，排除选项A和B。of是介词，后跟名词性的词。所以，选项D是正确的。

30. () [单选题] *

A. reproduce

B. reproductive(正确答案)

C. reproduction

D. reproductively

答案解析：由此往后连起来看,大意是食人鱼的群体组合是根据所面临的危险,根据水的深浅。并且,处于繁殖期的鱼处于鱼群的中央,以获得保护。of后应跟名词性词组,age前应有形容词修饰。Reproduce是动词,reproductive是形容词,reproduction是名词,reproductively是副词。选项B是正确的。Reproductive age繁殖期。

31. () [单选题] *

A. protection(正确答案)

B. protecting

C. protect

D. protective

答案解析：把处于繁殖期的鱼围在中间的目的是为了保护它们。For是介词,后用名词形式。选项A是正确的。For protection为了保护。

32. () [单选题] *

A. rate

B. size(正确答案)

C. amount

D. percentage

答案解析：把处于繁殖期的鱼围在中间的目的是为了保护它们。For是介词,后用名词形式。选项A是正确的。For protection为了保护。

33. () [单选题] *

A. fate

B. destiny

C. risk(正确答案)

D. chance

解析:鱼群的大小组合肯定是根据可能面临危险的大小。Fate命运,destiny命运,risk危险,chance机会。选项C是正确的。

34. () [单选题] *

A. high(正确答案)

B. low

C. peaceful

D. chaotic

答案解析：根据下一句:如果水位下降。说明这里应该是指水位比较高的时候。选项A是正确的。

35. () [单选题] *

A. for

B. against(正确答案)

C. without

D. towards

答案解析：For支持,against反对,without没有,towards朝、关于。根据原文,食人鱼组成大的鱼群作为保护以抵御捕食者。选项B是正确的。