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 __2__ the earth's gravitational pull and __3__ them on the moon.We have now become __4__ space.
Impressive and complex __5__ it may appear, the rocket, which was __6__ in China over 800 years __7__ , is a relatively simple device.Fuel that is __8__ in the rocket engine changes __9__ gas.The hot and rapidly __10__ gas must escape, but it can do so only __11__ an opening that __12__ backward.As the gas is __13__ with great force, it __14__ the rocket in the __15__ direction.Like the kick of a gun __16__ it is fired, it __17__ the laws of nature __18__ by Sir Isaac Newton when he discovered that“ __19__ every action, there is __20__ equal and opposite reaction.”
1.A.shown B.been C.appeared D.proved
2.A.against B.despite C.beyond D.from
3.A.send B.land C.take D.carry
4.A.travelers B.astronauts C.researchers D.explorers
5.A.that B.so C.as D.sometimes
6.A.made B.discovered C.developed D.invented
7.A.in advance B.before C.earlier D.ago
8.A.round B.contained C.stored D.burned
9.A.as B.into C.for D.the
10.A.heating B.escaping C.expanding D.conducting
11.A.in B.at C.by D.through
12.A.turns B.goes C.faces D.directs
13.A.transmitted B.dispersed C.erected D.radiated
14.A.attracts B.leads C.pulls D.pushes
15.A.same B.other C.opposite D.wrong
16.A.that B.when C.if D.although
17.A.states B.proves C.follows D.breaks
18.A.described B.discussed C.considered D.made
19.A.like B.as C.with D.for
20.A.no B.an C.another D.theCloze
1.【答案】D
【解析】因其后接形容詞powerful作表語故應(yīng)填系詞。shown不是系詞;been和appeared雖可作系詞但與句意不符;而proved可作系詞，意為“證明是”，符合句意。
2.【答案】C
【解析】根據(jù)意思判斷，beyond意為“超出，超過”。本文來源:考試大網(wǎng)
3.【答案】B
【解析】因land on意為“使……著陸”,而send, take和carry表示“把……送到……上去”時(shí),常接介詞to,故應(yīng)選land.
4.【答案】A
【解析】根據(jù)意思判斷，travelers正確.
5.【答案】C
【解析】原句是表示讓步的狀語從句，而且是一個(gè)倒裝句，故只能選C as。
6.【答案】D
【解析】根據(jù)詞的意思區(qū)分，invented(指發(fā)明)合乎題意。
7.【答案】D
【解析】該句為which引導(dǎo)的定語從句，意為“中國發(fā)明火箭是在距今800多年前?！本渲兄^語是一般過去時(shí)，故應(yīng)選D.ago。
8.【答案】D
【解析】根據(jù)句子意思判斷，burned正確。
9.【答案】B
【解析】change into是固定短語，“變成”的意思。
10.【答案】C
【解析】根據(jù)句子意思判斷，應(yīng)選expanding gas膨脹的氣體。
11.【答案】D
【解析】through的意思為“穿過，通過”。
12.【答案】C
【解析】faces意為“朝著”。
13.【答案】D
【解析】transmit意為“傳遞”，disperse意為“驅(qū)散”，erect意為“直立，挺直”，radiate意為“輻射，向各方向伸展”，只有D最合題意。
14.【答案】D
【解析】根據(jù)句子意思判斷，應(yīng)為push“推”。
15.【答案】C
【解析】朝相反的方向，故選C。
16.【答案】B
【解析】when引導(dǎo)的定語從句。
17.【答案】C
【解析】根據(jù)句子意思判斷, follow在這里是遵循的意思。
18.【答案】A
【解析】根據(jù)句子意思判斷，describe是“記載描述”的意思。
19.【答案】D
【解析】for是“對于”的意思。
20.【答案】B
【解析】根據(jù)上下文,只能用不定冠詞an。
Impressive and complex __5__ it may appear, the rocket, which was __6__ in China over 800 years __7__ , is a relatively simple device.Fuel that is __8__ in the rocket engine changes __9__ gas.The hot and rapidly __10__ gas must escape, but it can do so only __11__ an opening that __12__ backward.As the gas is __13__ with great force, it __14__ the rocket in the __15__ direction.Like the kick of a gun __16__ it is fired, it __17__ the laws of nature __18__ by Sir Isaac Newton when he discovered that“ __19__ every action, there is __20__ equal and opposite reaction.”
1.A.shown B.been C.appeared D.proved
2.A.against B.despite C.beyond D.from
3.A.send B.land C.take D.carry
4.A.travelers B.astronauts C.researchers D.explorers
5.A.that B.so C.as D.sometimes
6.A.made B.discovered C.developed D.invented
7.A.in advance B.before C.earlier D.ago
8.A.round B.contained C.stored D.burned
9.A.as B.into C.for D.the
10.A.heating B.escaping C.expanding D.conducting
11.A.in B.at C.by D.through
12.A.turns B.goes C.faces D.directs
13.A.transmitted B.dispersed C.erected D.radiated
14.A.attracts B.leads C.pulls D.pushes
15.A.same B.other C.opposite D.wrong
16.A.that B.when C.if D.although
17.A.states B.proves C.follows D.breaks
18.A.described B.discussed C.considered D.made
19.A.like B.as C.with D.for
20.A.no B.an C.another D.theCloze
1.【答案】D
【解析】因其后接形容詞powerful作表語故應(yīng)填系詞。shown不是系詞;been和appeared雖可作系詞但與句意不符;而proved可作系詞，意為“證明是”，符合句意。
2.【答案】C
【解析】根據(jù)意思判斷，beyond意為“超出，超過”。本文來源:考試大網(wǎng)
3.【答案】B
【解析】因land on意為“使……著陸”,而send, take和carry表示“把……送到……上去”時(shí),常接介詞to,故應(yīng)選land.
4.【答案】A
【解析】根據(jù)意思判斷，travelers正確.
5.【答案】C
【解析】原句是表示讓步的狀語從句，而且是一個(gè)倒裝句，故只能選C as。
6.【答案】D
【解析】根據(jù)詞的意思區(qū)分，invented(指發(fā)明)合乎題意。
7.【答案】D
【解析】該句為which引導(dǎo)的定語從句，意為“中國發(fā)明火箭是在距今800多年前?！本渲兄^語是一般過去時(shí)，故應(yīng)選D.ago。
8.【答案】D
【解析】根據(jù)句子意思判斷，burned正確。
9.【答案】B
【解析】change into是固定短語，“變成”的意思。
10.【答案】C
【解析】根據(jù)句子意思判斷，應(yīng)選expanding gas膨脹的氣體。
11.【答案】D
【解析】through的意思為“穿過，通過”。
12.【答案】C
【解析】faces意為“朝著”。
13.【答案】D
【解析】transmit意為“傳遞”，disperse意為“驅(qū)散”，erect意為“直立，挺直”，radiate意為“輻射，向各方向伸展”，只有D最合題意。
14.【答案】D
【解析】根據(jù)句子意思判斷，應(yīng)為push“推”。
15.【答案】C
【解析】朝相反的方向，故選C。
16.【答案】B
【解析】when引導(dǎo)的定語從句。
17.【答案】C
【解析】根據(jù)句子意思判斷, follow在這里是遵循的意思。
18.【答案】A
【解析】根據(jù)句子意思判斷，describe是“記載描述”的意思。
19.【答案】D
【解析】for是“對于”的意思。
20.【答案】B
【解析】根據(jù)上下文,只能用不定冠詞an。