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.
& m+ o$ h- V# K5 ^* V 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.7 B/ L- y$ ?' ], f5 Z7 k- h, C& Q5 Y
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.”
/ d' o2 M4 Q: U; f0 b 1.a.shown b.been c.appeared d.proved
$ M n( `& j( a9 E4 m 2.a.against b.despite c.beyond d.from* Y2 G3 H" f8 I- M# Z( e K
3.a.send b.land c.take d.carry
) z3 i4 W( p( w8 p* {! b9 R 4.a.travelers b.astronauts c.researchers d.explorers4 ^+ ^: ~+ ^) _9 e* `! `) x
5.a.that b.so c.as d.sometimes/ ?3 P! {/ H& {- A' M" x# d
6.a.made b.discovered c.developed d.invented
: x$ f5 Z2 q" t+ M: Y 7.a.in advance b.before c.earlier d.ago5 j9 P- p5 {5 w4 d
8.a.round b.contained c.stored d.burned7 e# v$ X+ ?6 d6 I
9.a.as b.into c.for d.the
) `1 L, W) ?6 C& q) F* {( s" z! o6 n 10.a.heating b.escaping c.expanding d.conducting
% k2 m. c3 R& o4 t 11.a.in b.at c.by d.through
8 @$ W7 s; y3 X! Z @: X1 T% j5 p, f 12.a.turns b.goes c.faces d.directs& @6 Y# y0 T( Y" i- S
13.a.transmitted b.dispersed c.erected d.radiated
n5 k: ?) C* |1 {! a* L! } 14.a.attracts b.leads c.pulls d.pushes3 j. J3 k* ^9 D0 F* U
15.a.same b.other c.opposite d.wrong% l, J" I; p9 h4 ~: t
16.a.that b.when c.if d.although# F- v3 ]& ~6 t5 d7 q: C
17.a.states b.proves c.follows d.breaks, ?% u5 {9 U# O
18.a.described b.discussed c.considered d.made8 {6 ^- d( S3 O0 B) U/ \
19.a.like b.as c.with d.for
9 j6 i! o) h5 p5 ~% b$ X 20.a.no b.an c.another d.thecloze test 31
: j8 b% K* |4 _- a- i6 `0 d$ M 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。& u# u( p7 [& g7 E5 q. R
2.【答案】c 【解析】根据意思判断,beyond意为“超出,超过”。' K3 ^) X9 s; I$ H5 C1 L+ o/ J
3.【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./ l/ O* L7 l: c3 Y2 f
4.【答案】a 【解析】根据意思判断,travelers正确." g5 A" q+ I0 ]- U0 W: ]
5.【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。) {% R/ j U) m5 ^- F' }0 B
6.【答案】d 【解析】根据词的意思区分,invented(指发明)合乎题意。& Q5 ?) N2 x, F
7.【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 _5 o9 U0 i9 E4 o# |; g1 ~
8.【答案】d 【解析】根据句子意思判断,burned正确。+ d: s, ^6 S* ]; H! k
9.【答案】b 【解析】change into是固定短语,“变成”的意思。1 H) J9 o; v/ A
10.【答案】c 【解析】根据句子意思判断,应选expanding gas膨胀的气体。/ K: a- m' k( ~, @' P
11.【答案】d 【解析】through的意思为“穿过,通过”。
0 Y& |* L/ r `4 ? 12.【答案】c 【解析】faces意为“朝着”。, l# h9 @9 Y: q
13.【答案】d 【解析】transmit意为“传递”,disperse意为“驱散”,erect意为“直立,挺直”,radiate意为“辐射,向各方向伸展”,只有d最合题意。
( m8 T3 U# G- U6 A: r8 _$ W 14.【答案】d 【解析】根据句子意思判断,应为push“推”。, M' r3 D+ ^2 C5 e/ t7 x* i4 m
15.【答案】c【解析】朝相反的方向,故选c。
* T9 s: H# g) b- g1 G 16.【答案】b【解析】when引导的定语从句。" Q% ^7 @! g9 L$ z x* M
17.【答案】c 【解析】根据句子意思判断, follow在这里是遵循的意思。8 ?$ \. P) m9 j
18.【答案】a 【解析】根据句子意思判断,describe是“记载描述”的意思。# I8 W H% d' m- ?( z% ~- _4 F
19.【答案】d【解析】for是“对于”的意思。
1 @0 e' v. m g6 K# u) a 20.【答案】b 【解析】根据上下文,只能用不定冠词an。 |