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 earths 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
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2015秋鲁教版英语八上Unit 3《What were you doing when the rainstrom came》（SectionA 3a-3c）word教案
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2015秋鲁教版英语八上Unit 3《What were you doing when the rainstrom came》（SectionA 1a-2d）word教案
2015秋鲁教版英语八上Unit 2《Why don’t you talk to your parents》（SectionA 1a-2d）word学案
2015秋鲁教版英语八上Unit 2《Why don’t you talk to your parents》（SectionA Grammar-4c）word教案
2015秋鲁教版英语八上Unit 1《Could you please clean your room》（SectionB 2a-3b）word学案
2015秋鲁教版英语八上Unit 1《Could you please clean your room》（SectionA 3a-4c）word学案
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2015秋鲁教版英语八上Unit 2《Why don’t you talk to your parents》（SectionB 1a-2e）word教案
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2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》（SectionA 2d-3c）word教案
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2015秋鲁教版英语八上Unit 2《Why don’t you talk to your parents》（SectionA 1a-2d）word教案
2015秋鲁教版英语八上Unit 3《What were you doing when the rainstrom came》（SectionB 1a-1d）word学案
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2015秋鲁教版英语八上Unit 4《An old man tried to move the mountains.》（SectionA 1a-2c）word教案
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