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[四级完型] 2010年12月英语四级考试完形填空提高练习(17)

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发表于 2012-8-14 10:05:12 | 显示全部楼层 |阅读模式
 Space is a dangerous place, not only because of meteors(流星) but also because of rays from the sun and other stars.The atmosphere again acts __1__ our protective blanket on __2__ .Light gets through, and this is essential __3__ plants to make the food which we __4__ .Heat, __5__ , makes our environments tolerable and some ultraviolet rays(紫外线的) penetrate the __6__ .Cosmic(宇宙的) rays of various kinds come __7__ the air from outer space, but __8__ quantities of radiation from the sun are screened off. __9__ men leave the atmosphere they are __10__ to this radiation; __11__ their spacesuits or the walls of their spacecraft, if they are inside, __12__ prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in __13__ .Doses of radiation are measured in __14__ called“rems (雷目)”.We all __15__ radiation here on earth from the sun, from cosmic rays and from radioactive minerals.The“ __16__ ”dose of radiation that we receive each year is about two millirems; it __17__ according toswheresyou live, and this is a very rough estimate.Scientists have reason to think __18__ a man can __19__ far more radiation __20__ without being damaged; the figure of 60 rems has been agreed.- [4 v9 [4 t8 U& n
  1.A.for B.with C.on D.as, K0 f: Y* W" q/ v: u+ L
  2.A.stars B.sun C.earth D.space
. J7 `. ?+ e) s* N  b  3.A.with B.from C.under D.for
" R# A4 O8 p4 U0 ?  4.A.use B.live C.eat D.get
7 E% h3 L+ e2 E9 ~5 }  5.A.again B.also C.besides D.too
& c" y! l' C- r" x) i6 _  6.A.environment B.space C.atmosphere D.earth
- c! M, I( M* _! Y- {. K6 `2 g' r  7.A.across B.to C.from D.through% u5 T* X* \+ ^9 @4 j1 u" X. J
  8.A.valid B.enormous C.various D.proper! |" [% j  E: g
  9.A.As soon as B.As well as C.As much as D.As possible as
- }. T6 g9 G( ?4 {  10.A.shown B.exposed C.faced D.covered" A: q* q9 h2 I4 m& d1 w7 e) m3 g% Q
  11.A.but B.because C.so D.so that
* K1 g. b5 F8 D- x- g  12.A.get B.make C.have D.do' Y' J7 o' H7 S1 _9 c- c8 j2 x& _5 U
  13.A.earth B.atmosphere C.space D.environment: \' T, F/ i, Z8 R; }& H5 D, d
  14.A.pieces B.units C.parts D.elements2 m, ~/ q) ?8 P: P, [0 a
  15.A.receive B.accept C.bring D.catch, }. E5 D5 _* }
  16.A.conventional B.commonC.general D.normal0 {  U7 o2 S4 ?( R" V) w
  17.A.shifts B.converts C.modifies D.varies: l  [) k) F# v6 s0 w) j0 u# U
  18.A.what B.which C.that D.why; ~/ A  _3 r! V- A6 p1 ^: f& L
  19.A.put up with B.keep up with C.come up with D.catch up with
) G6 N9 r. O" ~8 \: z  20.A.from B.than C.as D.away
/ K+ y" \* g% C7 K4 E! B2 m  点击进入下页查看第十七篇答案+解说:
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 楼主| 发表于 2012-8-14 10:05:13 | 显示全部楼层

2010年12月英语四级考试完形填空提高练习(17)

 1.【答案】D
, e4 Q3 o' N, g  【解析】act as“充当、起……作用”;act for“代表、代理”;act on“按照”。本句意为大气层起到保护伞的作用。+ R, f# J8 h6 K& t, V
  2.【答案】C
3 u  T: R* f7 w9 ^+ y  【解析】见上题分析。- Y/ U. [& z! B
  3.【答案】D
0 {! z' B+ g. G3 }  I1 m( m4 g  【解析】be essential for“对……来说是首要的、基础的”,固定搭配。
" O- @8 @- [/ Z! B  4.【答案】C6 E: l3 c% L' @
  【解析】只有eat与先行词food和定语从句which we…搭配。
+ a3 X: R1 c# u/ x5 X. I; F, z1 ~  5.【答案】D
. V0 `0 W9 J" E4 I  【解析】本句意为:热不仅使我们的生产环境温度适宜,而且紫外线也能穿透大气。also一般紧跟动词;besides一般用在句前;too可用在句中,用逗号隔开。
& r% g$ \! u' y( [/ ]) T" h  6.【答案】C6 u2 H- X/ z( m% n
  【解析】根据上题所讲,penetrate这个动词后面应接atmosphere“大气”这个名词。( ^& r/ s$ c6 S- ^3 T
  7.【答案】D
1 z% A1 Z3 H- D) f  【解析】这里的come through相当于penetrate,穿透。come across“偶遇”;come to“来到”;come from“来自”。本句意为:各类来自外部空间的宇宙射线穿透大气层……,故选come through。* t" W0 N: Q$ k
  8.【答案】B
6 m" d2 `$ i% T+ l. w' J5 c: S  【解析】Valid有效的;various各种各样的;proper合适的。在四个选项中只有enormous表示“大量的”意思。0 e  a) u$ C# L
  9.【答案】A
# r3 @/ x7 I  l# @  【解析】as soon as“只要”;as well as“除……之外”;as much as“和……一样多”;as possible as“尽可能的”。# @- k3 N5 _  z" Z9 V
  10.【答案】B
) ^! h  N( w, a- i- U' U0 g  【解析】be exposed to“暴露于”,show“展示”;face“面对”。
6 S7 n- d/ O" e6 _0 e  11.【答案】A
9 e& v# N. d7 ]7 ^; a1 |  【解析】本句前半句的意思是:“人们一离开大气层就会接触射线”;后半句意思是:“他们的太空服和太空船会阻止射线造成的损害”。前后应该是转折关系,故用but。: R7 p. Z+ }* W
  12.【答案】D1 o$ C2 l1 A0 `1 C  b0 k7 L
  【解析】Do +动词原型的结构表示强调谓语动词。
" }& X1 V* e+ E" \/ T% w  13.【答案】C/ r, p5 ^3 v, @. A0 q
  【解析】由radiation和explorers可推测,应选space(太空)。本句意为射线是探险者在太空遇见的已知的最大危险。
' H' H6 c% v* f8 _  14.【答案】B
; b$ ]2 L; _# u8 y  【解析】unit“单位、单元”;element“元素”;part“部分”;piece“碎片”本句意为:射线的多少可以以雷目这个测量单位测量。
% I: a. J0 g% R( {! b* j  15.【答案】A
: ^& s: e8 I+ q  【解析】receive表示客观收到;accept表示主观接受。我们受到的辐射并非主观接受。
& N+ C  e; T) a* X$ ]$ R) P3 N  16.【答案】D
2 C" [; j( q3 U* s4 N% W$ M  【解析】conventional“传统的”;common“共同的、普通的”;general“一般的、总体的”;normal“正常的”。本句意为:我们每年接受的正常辐射量……,故选normal。
& g3 f8 P9 Q1 O( a" J/ L% j  17.【答案】D0 k8 }% h4 S% o
  【解析】shift“移动”;convert“转换”;modify“修改”;vary“变化”。根据句意,所处地点不同,所受辐射量也不一样……,故选varies.
+ T* ]: E2 {' _! M, x  18.【答案】C
3 g2 l# t+ i% @, n  【解析】本句应填入引导宾语从句的代词,而从句不缺少主语和宾语,因而不选择what和which,又加之主句是陈述语气,故选择that。* M8 H( X8 D9 f
  19.【答案】A
5 y- ~5 `/ H" h  【解析】put up with“忍受”,固定搭配。keep up with和catch up with意为跟上,come up with意为提出。
9 ?, I1 k7 M8 W* F6 m  20.【答案】B  c' W! ^" B% c3 l) H* Y2 ~$ k& i
  【解析】more (radiation)后应加than。
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