2015年职称英语理工类A级练习题：完形填空(1)
<p> <span word="the">the</span> <span word="greatest">greatest</span> <span word="mystery">mystery</span> <span word="of">of</span> <span word="whales">whales</span></p><p> <span word="the">the</span> <span word="whale">whale</span> <span word="is">is</span> <span word="a">a</span> <span word="mammal">mammal</span> - <span word="warm">warm</span>-<span word="blooded">blooded</span>, <span word="air">air</span>-<span word="breathing">breathing</span>, <span word="giving">giving</span> <span word="birth">birth</span> <span word="to">to</span> <span word="its">its</span> <span word="young">young</span> <span word="alive">alive</span>, <span word="sucking">sucking</span> <span word="them">them</span>-<span word="and">and</span>, <span word="like">like</span> <span word="all">all</span> <span word="mammals">mammals</span>, <span word="originated">originated</span> <span word="on">on</span> <span word="land">land</span>. <span word="there">there</span> <span word="are">are</span> <span word="many">many</span> <span word="signs">signs</span> <span word="of">of</span> <span word="this">this</span>. __1__ <span word="front">front</span> <span word="flippers">flippers</span>, <span word="used">used</span> <span word="for">for</span> <span word="steering">steering</span> <span word="and">and</span> <span word="stability">stability</span>, <span word="are">are</span> <span word="traces">traces</span> <span word="of">of</span> <span word="feet">feet</span>.</p><p> <span word="immense">immense</span> <span word="strength">strength</span> <span word="is">is</span> <span word="built">built</span> <span word="into">into</span> <span word="the">the</span> <span word="great">great</span> <span word="body">body</span> <span word="of">of</span> <span word="the">the</span> <span word="big">big</span> <span word="whales">whales</span>, <span word="and">and</span> <span word="in">in</span> <span word="fact">fact</span> <span word="most">most</span> <span word="of">of</span> <span word="a">a</span> <span word="whales">whales</span> <span word="body">body</span> <span word="is">is</span> <span word="one">one</span> <span word="gigantic">gigantic</span> <span word="muscle">muscle</span>. <span word="the">the</span> <span word="blue">blue</span> <span word="whales">whales</span> <span word="pulling">pulling</span> __2__ <span word="has">has</span> <span word="been">been</span> <span word="estimated">estimated</span> <span word="at">at</span> 400 <span word="horsepower">horsepower</span>. <span word="one">one</span> <span word="specimen">specimen</span> <span word="was">was</span> <span word="reported">reported</span> <span word="to">to</span> <span word="have">have</span> __3__ <span word="a">a</span> <span word="whaling">whaling</span> <span word="vessel">vessel</span> <span word="for">for</span> <span word="seven">seven</span> <span word="hours">hours</span> <span word="at">at</span> <span word="the">the</span> __4__ <span word="of">of</span> <span word="eight">eight</span> <span word="knots">knots</span>.</p><p> <span word="an">an</span> <span word="enraged">enraged</span> <span word="whale">whale</span> <span word="will">will</span> <span word="attack">attack</span> <span word="a">a</span> <span word="ship">ship</span>. <span word="a">a</span> <span word="famous">famous</span> __5__ <span word="of">of</span> <span word="this">this</span> <span word="was">was</span> <span word="the">the</span> <span word="fate">fate</span> <span word="of">of</span> <span word="whaler">whaler</span> <span word="essex">essex</span>, <span word="which">which</span> <span word="was">was</span> <span word="sunk">sunk</span> __6__ <span word="south">south</span> <span word="america">america</span> <span word="early">early</span> <span word="in">in</span> <span word="the">the</span> <span word="last">last</span> <span word="century">century</span>. <span word="more">more</span> <span word="recently">recently</span>, <span word="steel">steel</span> <span word="ships">ships</span> <span word="have">have</span> <span word="had">had</span> <span word="their">their</span> <span word="plates">plates</span> <span word="buckled">buckled</span> <span word="in">in</span> <span word="the">the</span> <span word="same">same</span> <span word="way">way</span>. <span word="sperm">sperm</span> <span word="whales">whales</span> <span word="were">were</span> <span word="known">known</span> <span word="to">to</span> __7__ <span word="the">the</span> <span word="old">old</span>-<span word="time">time</span> <span word="whaleboats">whaleboats</span> <span word="in">in</span> <span word="their">their</span> <span word="jaws">jaws</span> <span word="and">and</span> <span word="crush">crush</span> <span word="them">them</span>.</p><p> <span word="the">the</span> <span word="greatest">greatest</span> <span word="mystery">mystery</span> <span word="of">of</span> <span word="whales">whales</span> is their diving ability. the sperm whale __8__ the bottom for his favourite food, the octopus. __9__ 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 as long as one hour. two feats are involved in this : storing up enough __11__ and withstanding the great change in pressure. just __12__ he dose 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__ 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 cant bring a live whale into the laboratory for study, no one __15__ just how these things work.</p>
页:
[1]