06年GCT英语完型填空专项训练(四)
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. shown B. been C. appeared D. proved
2. A. send B. land C. take D. carry
3. A. that B. so C. as D. sometimes
4. A. in advance B .before C. earlier D. ago
5. A. round B. contained C. stored D. burned
6. A. heating B. escaping C. expanding D. conducting
7. A. turns B. goes C. faces D. directs
8. A. attracts B. leads C. pulls D. pushes
9. A. states B. proves C. follows D. breaks
10. A. no B. an C .another D. the
1.【答案】D
【解析】因其后接形容词powerful作表语故应填系词。shown不是系词；been和appeared虽可作系词但与句意不符；而proved可作系词，意为“证明是”，符合句意。
2.【答案】B
【解析】因land on意为“使……着陆”, 而send, take和carry表示“把……送到……上去” 时,常接介词to, 故应选land.
3.【答案】C
【解析】原句是表示让步的状语从句，而且是一个倒装句，故只能选C as。
4.【答案】D
【解析】该句为which引导的定语从句，意为“中国发明火箭是在距今800多年前。” 句中谓语是一般过去时，故应选D. ago。
5.【答案】D
【解析】根据句子意思判断，burned正确。
6.【答案】C
【解析】根据句子意思判断，应选expanding gas膨胀的气体。
7.【答案】C
【解析】faces意为“朝着”。
8.【答案】D
【解析】根据句子意思判断，应为push“推”。
9.【答案】C
【解析】根据句子意思判断, follow在这里是遵循的意思。
10.【答案】B
【解析】根据上下文,只能用不定冠词an。
Passage 8
Dalton wondered why the heavier and lighter gases in the atmosphere did not separate as oil and water do. He finally concluded that the constituent __1__ must exist in the form of tiny particles or atoms and that these must be completely mixed together in the __2__. This threw a new light in the laws of definite proportions. It was __3_ necessary to suppose that the atoms could combines into small groups of uniform __5__ and so form more complex substance; thus the mystery of this law was __5__ . Dalton suggested, for example, that carbon monoxide __6__ formed by the one with one pairing of atoms of carbon and oxygen, __7_ carbon dioxide results from a single atom of carbon uniting with two atoms __8__ oxygen. Assuming this to be true, then the definite proportions of Prout´s law would naturally __9_ the relative weights of the many __10__ kinds of atoms.
1. A. gases B. pieces C. things D. gas
2. A. sky B. atmosphere C. oxygen D. environment
3. A. only B. too C. that D. extremely
4. A. construct B. structure C. piece D. feature
5. A. solved B. discovered C. broke D. told
6. A. must B. been C. were D. is
7. A. while B. when C. therefore D. also
8. A. from B. in C. of D. for
9. A. describe B. unit C. mix D. reveal
10.A.different B. usual C. important D. chemical
1.【答案】A
【解析】根据上文中的heavier and lighter gases可以确定, 本空中应填入“组成的气体”，即constituent gases。
2.【答案】B
【解析】sky意为“天空”，atmosphere意为“大气”, oxygen意为“氧气”, environment意为“环境”,只有B项正确。
3.【答案】A
【解析】only necessary的意思是“仅仅是必要”。故A正确。
4.【答案】B
【解析】根据句子意思判断,这里需要“结构”这个词，而B合乎题意。
5.【答案】A
【解析】solve相当于find a solution or an answer to, 意为“解决”、“解开”,如: solve a problem (a puzzle, a mystery)；discover相当于find something existing but not known before, 意为“发现”,如: discover a place (a fact, the truth)。因此应选A。
6.【答案】D
【解析】因为是表一般规律，又是单数，所以用is这个词。
7.【答案】A
【解析】while表示对比。如：Some substances are soluble, while others are not.一些物质是可溶的，而另一些物质是不可溶的。
8.【答案】C
【解析】of表示“含量，分量”。
9.【答案】B
【解析】describe意为“描述”；unite意为“结合，合并”；mix意为“(不同的东西)混合在一起”，如：mix flour and water；reveal意为“揭露，揭示”
10.【答案】A