2017年职称英语考试《综合A》完形填空练习题
称英语考试备考已经开始，不少同学已开始准备2017年职称英语考试复习。为了促进大家的学习积极性，以下是yjbys网小编整理的关于2017年职称英语考试《综合A》完形填空练习题，供大家练习。
The Greatest Mystery of Whales
The whale is a mammal (哺乳动物) --warm-blooded, air-breathing, giving birth to its young alive, sucking them--and, like all mammals, originated on land. There are many signs of this.
__________ (1) front flippers (鳍肢), used for steering and stability, are traces of feet.
Immense strength is built into the great body of the big whales, and in fact most of a whale's body is one gigantic muscle. The blue whale's pulling __________ (2) has been estimated at 400 horsepower. One specimen was reposed to have __________ (3) a whaling vessel for seven hours at the __________ (4) of eight knots.
An enraged whale will attack a ship. A famous__________(5) of this was the fate of whaler Essex, which was sunk__________(6) the coast of South America early in the last century. More recently, steel ships have had their plates buckled (扭曲变形) in the same way. Sperm whales were known to__________(7) the old-time whaleboats in their jaws and crush them.
The greatest mystery of whales is their diving ability. The sperm whale can __________(8) the bosom for his favorite food, the octopus (章鱼). __________(9) that search he is known to go as far down as 3,200 feet, where the pressure is 1,400 pounds to the square inch. Doing__________(10) he will remain submerged (水下的 ) as long as one hour. Two feats (绝技) are involved in this: storing up enough __________ (11) (all whales are air-breathed) and withstanding the great change in pressure. Just__________(12) he does it scientists have not determined. It is believed that some of the oxygen is stored in a special system of blood vessels, rather than just held in the lungs. And__________ (13) is believed that a special kind of oil in his head is some sort of compensating mechanism that automatically adjusts the internal pressure of his body. But __________(14) you can't bring a live whale into the laboratory for study, no one __________(15) just how these things work.
1.A. Their
B. It's
C. Theirs
D. Its
2.A. strength
B. width
C. height
D. length
3.A. eaten
B. crashed
C. towed (拖)
D. lifted
4.A. distance
B. rate
C. voyage
D. sail
5.A. picture
B. film
C. example
D. book
6.A. offB. of C. aboveD. over
7.A. hit
B. seize
C. damage
D. kick
8.A. fly to
B. jump on
C. dive to
D. crawl on
9.A. In
B. On
C. By
D. At
10. A. so
B. such
C. above
D. the same
11. A. water
B. oxygen
C. energy
D. heat
12. A. what
B. who
C. how
D. which
13. A. it
B. he
C. she
D. there
14. A. because of
B. due to
C. since
D. owing to
15. A. communicates
B. knows
C. hears
D. develops
答案与解析
1.D。从上下文语境看，这里要填入的只是一个物主代词，即指出是谁的front flippers。前面在谈whale时用的是单数，所以这里要用单数的代词its。
2.A。本句是说，鲸鱼的力气之大，蓝鲸的拉力估计可达400马力。除了strength，其他三个选项和力气无关，分别是宽度、高度和长度。
3.c。本句是说，蓝鲸的巨大拉力表现在它能拉得动一艘捕鲸船，所以这里需要填入一个表示“拉”或“拖”的动词。
4.B。本句是说，蓝鲸能以什么速度来拖这条捕鲸船。在四个选项中只有rate的意思是“速度”，和speed同义。
5.C。本句是说，发怒的鲸鱼会对船发动攻击。下面举例说明，所以选example。
6.A。表示在离开海岸不远处用介词off。
7.B。从上下文语境看，in their iaws这个短语决定了这里只可能用seize这个动词。鲸鱼把古代的捕鲸船咬在嘴里，然后把它咬碎。
8.c。从上下文语境看，这里在讲鲸鱼潜水的本领，所以选c。其他选项fly(飞)，iump(跳)，crawl(爬)，这三个动作都不是鲸鱼能做的。
9.A。这里考查习惯搭配，search前面的介词用in。inthat search意为“在这一搜寻过程中”。
10.A。so用来代替前面所说过的一个动作。这里它指的是sperm whale为了觅食潜至海底3200英尺处。
11.B。store up的意思是“储存”。从上下文语境看，由于鲸鱼要在深海中停留一小时，它当然要有储存氧气的本领，所以这里要填入的是oxygen。
12.c。本句是说，科学家只知道鲸鱼有储存氧气和抵御压力的绝技，但它究竟是怎么做到这一点的，他们却还不知道。注意这个句子里的宾语从句被移到前面来了。正常的语序是：Scientists have not determined how he does it.
13.A。这里用的是it is believed that…句型。it是形式主语，指代后面的that从句。这个that从句是一个主语从句。
14.C。这里缺少的显然是一个连接词，因为后面是一个从句而不是短语。在四个选项中只有since是连接词，另外三个选项都是复合介词，后面都跟名词，不能跟一个句子。
15.B。从上下文语境看，既然你无法把一条活的鲸鱼搬到实验室里来研究，自然没有人知道这到底是怎么一回事。根据意思可知此处选knows。
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