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The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking t
The Greatest Mystery of Whales The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking t
admin
2014-05-13
9
问题
The Greatest Mystery of Whales
The whale is a warm-blooded, air-breathing animal, giving birth to its young alive, sucking them—and, like all mammals, originated on land. There are many【C1】______of this. Its front flippers(鳍状肢), used for steering and stability, are traces of feet.
Immense strength is【C2】______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 strength has been estimated【C3】______ 400 horsepower. One specimen was reported to have towed(拖)a whaling vessel for seven hours at the【C4】______of eight knot(节).
An angry whale will【C5】______. A famous example of this was the fate of Whaler Essex, 【C6】______was sunk off the coast of South America early in the last century. More recently, steel ships have【C7】______their plates buckled(使弯曲)in the same way. Sperm whales(抹香鲸)were known to seize the old-time whaleboats in their jaws and crush them.
The greatest【C8】______of whales is their diving ability. The sperm whale dives to the bottom for his【C9】______food, the octopus(章鱼). In that search he is known to go as far down as 3, 200 feet, where the【C10】______is 1, 400 pounds to a square inch. Doing so he will【C11】______ underwater as long as one hour. Two special skills are involved in this storing up enough【C12】______ (all whales are air-breathed)and tolerating the great change in pressure. Just how he does it scientists have not【C13】______. It is believed that some of the oxygen is stored in a special【C14】______of blood vessels, rather than just held in the lungs. And it is believed that a special kind of oil in his head is some sort of a compensating mechanism that【C15】______adjusts the internal pressure of his body. But since you can’t bring a live whale into the laboratory for study, no one knows just how these things work.
【C2】
选项
A、worked
B、divided
C、built
D、moved
答案
C
解析
sth.is built into…的意思是“使……成为……的组成部分”,这里指鲸鱼具有巨大的气力。其他几个选项意思上讲不通。work工作,运行;divide划分;move移动。
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本试题收录于:
职称英语理工类B级题库职称英语分类
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职称英语
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