06年GCT英语完型填空专项训练(四)
文章作者 100test 发表时间 2007:01:15 17:58:10
来源 100Test.Com百考试题网
GCT英语完型填空专项训练及答案解析
Passage 7
The rocket engine, with its steady roar like that of a waterfall or a thunderstorm, is an impressive symbol of the new space age. Rocket engines have __1_ powerful enough to shoot astronauts beyond the earth´.s gravitational pull and __2 __them on the moon. We have now become travelers space.
Impressive and complex __3__ it may appear, the rocket, which was invented in China over 800 years __4__ , is a relatively simple device. Fuel that is __5__ in the rocket engine changes into gas. The hot and rapidly __6__ gas must escape, but it can do so only through an opening that __7__ backward. As the gas is radiated with great force, it __8__ the rocket in the opposite direction. Like the kick of a gun that it is fired, it __9__ the laws of nature described by Sir Isaac Newton when he discovered that “for every action, there is __10__ equal and opposite reaction.”
1. A. sho
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