【导语】参加考试，考生最害怕的两门科目，一个是数学，一个是英语，这两门科目都不是临时抱佛脚可以取得好成绩的。为了能更好的帮助考生们学习，这里
上海成人高考网小编整理了2020年
上海成考高起点英语完型填空习题及答案四，希望对大家有所帮助。
2020年上海成考高起点英语完型填空习题及答案四
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 1 ____a fearsome 2 ____may well not be deserved. The fish, which is found in the Amazon in Brazil, have been 3 ____as
deadly carnivores(食肉动物) that work in shoals to overwhelm their prey and strip it of its flesh in seconds.
However, experts 4 ____ 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 5 ____against
other predators, according to the team.
"Previously it was thought piranhas shoaled as it6 ____them to form a cooperative hunting group," said Professor Anne Magurran. " 7 ____ , we have found that it is primarily a defensive behavior. "
Piranhas can be attacked by animals 8 ____ dolphins, caimans and large fish, so forming a shoal is a good way of 9 ____being killed. Piranhas of 10 ____age stay in the middle of the group for
11 ____and the 12 ____ of the shoal differs according to the level of 13 ____When the water level is
14 ____ , the fish form small groups as there is space to escape, but when the water level drops, they form large groups as protection 15 ____ predators.
1.() [单选题] *
A. as
B. as if
C. as though
D. since
2. () [单选题] *
A. kill
B. killer
C. murderer
D. murder
3. () [单选题] *
A. told
B. saying
C. describing
D. portrayed
4.() [单选题] *
A. out
B. with
C. from
D. by
5.() [单选题] *
A. them
B. themselves
C. it
D. itself
6.() [单选题] *
A. able
B. is able
C. enable
D. enabled(正确答案)
7.() [单选题] *
A. Thus
B. However
C. Suddenly
D. Therefore
8.() [单选题] *
A. such
B. example
C. like
D. as such
9. () [单选题] *
A. prevent
B. preventing
C. avoid
D. avoiding
10. () [单选题] *
A. reproduce
B. reproductive
C. reproduction
D. reproductively
11. () [单选题] *
A. protection
B. protecting
C. protect
D. protective
12. () [单选题] *
A. rate
B. size
C. amount
D. percentage
13. () [单选题] *
A. fate
B. destiny
C. risk
D. chance
14. () [单选题] *
A. high
B. low
C. peaceful
D. chaotic
15. () [单选题] *
A. for
B. against
C. without
D. towards
参考答案：
1.A 答案解析：看第2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。
2.B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
3.D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。
4.C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
5.B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。
6.D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
7.B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
8.C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。
9.D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。
10.B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。
11.A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。
12.B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。
13.C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。
14.A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。
15.B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。
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。
