2011 英语四级完形填空专练及答案解析(
  17) 英语四级完形填空专练及答案解析( )
来源:天星 更新日期:2011-04-27 点击: 4
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.
  1.A.for B.with C.on D.as
  2.A.stars B.sun C.earth D.space
  3.A.with B.from C.under D.for
  4.A.use B.live C.eat D.get
  5.A.again B.also C.besides D.too
  6.A.environment B.space C.atmosphere D.earth
  7.A.across B.to C.from D.through
  8.A.valid B.enormous C.various D.proper
  9.A.As soon as B.As well as C.As much as D.As possible as
  10.A.shown B.exposed C.faced D.covered
  11.A.but B.because C.so D.so that

  12.A.get B.make C.have D.do
  13.A.earth B.atmosphere C.space D.environment
  14.A.pieces B.units C.parts D.elements
  15.A.receive B.accept C.bring D.catch
  16.A.conventional B.commonC.general D.normal
  17.A.shifts B.converts C.modifies D.varies
  18.A.what B.which C.that D.why
  19.A.put up with B.keep up withC.come up with D.catch up with
  20.A.from B.than C.as D.away Cloze Test 24
  1.【答案】D 【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。
  2.【答案】C 【解析】见上题分析。
  3.【答案】D 【解析】be essential for“对……来说是首要的、基础的”,固定搭配。
  4.【答案】C 【解析】只有 eat 与先行词 food 和定语从句 which we…搭配。
  5.【答案】D 【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。

  6.【答案】C 【解析】根据上题所讲,penetrate 这个动词后面应接 atmosphere“大气”这个名词。
  7.【答案】D 【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。
  8.【答案】B 【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。
  9.【答案】A 【解析】 soon as“只要”; well as“除……之外”; much as“和……一样多”; possible as as as as as“尽可能的”。
  10.【答案】B 【解析】be exposed to“暴露于”,show“展示”;face“面对”。
  11.【答案】A 【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。
  12.【答案】D 【解析】Do +动词原型的结构表示强调谓语动词。
  13.【答案】C 【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。
  14.【答案】B
【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。
  15.【答案】A 【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。
  16.【答案】D 【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。
  17.【答案】D 【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.
  18.【答案】C 【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。
  19.【答案】A 【解析】 up with“忍受”, put 固定搭配。 keep up with 和 catch up with 意为跟上,come up with 意为提出。
  20.【答案】B 【解析】more (radiation)后应加 than。
 

相关内容

2011英语四级完形填空专练及答案解析11

   2011 英语四级完形填空专练及答案解析(11) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 2 We have spoken of marriage as a formal contract.It should be noted, however, that this contract does not 1 the same form in different societies.In Western societies, the 2 of a ...

2011英语四级完形填空专练及答案解析12

   2011 英语四级完形填空专练及答案解析(12) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 4 Many people wrongly believe that when people reach old age, their families place them in nursing homes.They are left in the 1 of strangers for the rest of their lives.Their 2 c ...

2011英语四级完形填空专练及答案解析18

   2011 英语四级完形填空专练及答案解析(18) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 6 As the plane circled over the airport, everyone sensed that something was wrong.The plane was moving unsteadily through the air, and 1 the passengers had fastened their seat be ...

2011英语四级完形填空专练及答案解析15

   2011 英语四级完形填空专练及答案解析(15) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 6 There are more than forty universities in Britain?nearly twice as many as in 1960.During the 1960s eight completely new ones were founded, and ten other new ones were created 1 ...

2011英语四级完形填空专练及答案解析3

   2011 英语四级完形填空专练及答案解析(3) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 8 Who won the World Cup 1994 football game? What happened at the United Nations? How did the critics like the new play? 1 an event takes place, newspapers are on the streets 2 the ...

2011英语四级完形填空专练及答案解析5

   2011 英语四级完形填空专练及答案解析(5) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 6 Many students find the experience of attending university lectures to be a confusing and frustrating experience.The lecturer speaks for one or two hours, perhaps 1 the talk with ...

2011英语四级完形填空专练及答案解析6

   2011 英语四级完形填空专练及答案解析(6) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 4 From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us.When humans first 1 , they were like newborn children, ...

2011英语四级完形填空专练及答案解析8

   2011 英语四级完形填空专练及答案解析(8) 英语四级完形填空专练及答案解析( ) 来源:天星 更新日期:2011-04-27 点击: 6 Music comes in many forms; most countries have a style of their own. 1 the turn of the century when jazz was born, America had no prominent 2 ofits own.No one knows exactly when ...

2010高考英语完形填空练习题及答案解析

   外语下载中心 http://down.tingroom.com 2010年高考英语完形填空练习题及答案解析 一 I used to be ashamed of my grandma. I know that's a 36 thing to say, but it was true until today, so I have to 37 it. The 38 started when my friend Katy found Grandma's false teeth floating in ...

高二英语完形填空专练

   高二英语完形填空专练 高二英语完形填空专练 一 I arrived in the classroom, ready to share my knowledge and experience with 75 students who would be my English Literature class. Having taught in the US for 17 years, I had no 36 about my ability to hold their attention and ...

热门内容

高考英语阅读高频难词

   1.alter v. 改变,改动,变更 2.burst vi.n. 突然发生,爆裂 3.dispose vi. 除掉;处置;解决;处理(of) 4.blast n. 爆炸;气流 vi. 炸,炸掉 5.consume v. 消耗,耗尽 6.split v. 劈开;割裂;分裂 a.裂开的 7.spit v. 吐(唾液等);唾弃 8.spill v. 溢出,溅出,倒出 9.slip v. 滑动,滑落;忽略 10.slide v. 滑动,滑落 n. 滑动;滑面;幻灯片 11.bacteria n. 细 ...

高二上学期英语单元测试(2)4?5单元

   蓝天家教网 http://www.ltjiajiao.com 伴你快乐成长 本资料来源于《七彩教育网》http://www.7caiedu.cn 高中学生学科素质训练系列试题 高二上学期英语单元测试(2) [原人教版 4?5 单元 原人教版] ? 原人教版 本试卷分为第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分.共150分,考试时间120分 钟. 第I卷(三部分,共115分) 注意事项: 1.答第一卷前,考生务必将自己的姓名,准考证号,考试科目用铅笔涂写在答题卡上. 2.每小题选出答案后,用铅 ...

自考英语写作真题2009-10

   2009年10月自学考试于24日开考,以下是自考英语写作真题,供参考!   Ⅰ. Supply the missing paragraph (20 points)   The following passage is incomplete with one body paragraph missing. Study the passage carefully and write the missing paragraph in about 100 words. Make sure that y ...

2010年四级英语考试

   2010 年 12 月大学英语四级考试真题 Part I Writing (30 minutes) Directions:For this part, you are allowed 30 minutes to write a short essay entitled How Should Parents Help Children to Be Independent? You should write at least 150 words following the outline giv ...