2015年职称英语理工类考试完形填空练习(1)-查字典英语网
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2015年职称英语理工类考试完形填空练习(1)

发布时间:2016-03-01  编辑:查字典英语网小编

  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 front flippers,used for steering and stability, are traces of feet.

  __________ . of this.Its Immense strength is __________ . into the great body of the big whales,and in fact most of a whales body is one gigantic muscle.The blue whales pulling strength has been estimated __________ . 400 horsepower.One specimen was reported to have toweda whaling vessel for seven hours at the __________. of eight knot .

  An angry whale will __________ . A famous example of this was the fate of Whaler Essex, __________ . was sunk off the coast of South America early in the last century.More recently, steel ships have __________ . their plates buckledin the same way.Sperm whaleswere known to seize the old-time whaleboats in their jaws and crush Them.

  The greatest __________ . of whales is their diving ability.The sperm whale dives to the Bottom for his __________ . food,the octopus.In that search he is known to go as far Down as 3,200 feet, where the. __________ . is 1,400 pounds,to a square inch.Doing so he

  Will __________ . underwater long as one hour.Two special skills are involved in this storing up enough __________. and tolerating the great change in pressure.Just how he does it scientists have not __________ . .It is believed that some of the oxygen is stored in a special __________ . 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 compensating mechanism that __________ . adjusts the internal pressure of his body.But since you cant bring a live whale into the laboratory for study, no one knows just how these things work.

  51 A aspects

  B signs

  C ways

  D reasons

  52 A worked

  B divided

  C built

  D moved

  53 A at

  B in

  C of

  D with

  54A number

  B degree

  C distance

  D rate

  55A abandon

  B attack

  C leave

  D board

  56A as

  B who

  C which

  D that

  57A had

  B operated

  C Seen

  D caught

  58A interest

  B job

  C danger

  D mystery

  59A favorite

  B fast

  C new

  D sufficient

  60A depth

  B pressure

  C level

  D size

  61A set

  B become

  C remain

  D rest

  62A heat

  B energy

  C food

  D oxygen

  63A witnessed

  B determined

  C applied

  D calculated

  64A system

  B place

  C arrangement

  D equipment

  65A mentally

  B artificially

  C manually

  D automatically

  

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