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1、 GCT考试英语辅导教材-完型(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 earth. Light gets through, and this is essential _2_ plants to make the food which we eat. Heat, _3_ , makes o
2、ur environments tolerable and some ultraviolet rays (紫外线的) penetrate the atmosphere. Cosmic (宇宙的) rays of various kinds come _4_ the air from outer space, but a great quantity of radiation from the sun are screened off. _5_ men leave the atmosphere they are exposed to this radiation; but their space
3、suits or the walls of their spacecraft, if they are inside, _6_ prevent a lot of radiation damage. Radiation is the greatest known danger to explorers in _7_ . Doses of radiation are measured in units called “rems (雷目)”. We all _8_ radiation here on earth from the sun, from cosmic rays and from radi
4、oactive minerals. The “_9_” dose of radiation that we receive each year is about two millirems; it _10_ according toswheresyou live, and this is a very rough estimate. 1. A.for B. with C. on D. as 2. A. with B. from C. under D. for 3. A. again B. also C. besides D. too 4. A. across B.to C. from D. t
5、hrough 5. A. As soon as B. As well asC. As much as D. As possible as 6. A. get B. make C. have D. do 7. A. earth B. atmosphere C. space D. environment 8. A. receive B. accept C. bring D. catch 9. A. conventional B. commonC. general D. normal 10. A. shifts B. converts C. modifies D. varies 1.【答案】D 【解
6、析】act as “充当、起作用”；act for “代表、代理”；act on “根据”。本句意为大气层起到爱护伞的作用。 2.【答案】D 【解析】be essential for “对来说是首要的、根底的”，固定搭配。 3【答案】D 【解析】本句意为：热不仅使我们的生产环境温度相宜，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。 4.【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
7、宙射线穿透大气层，应选come through。 5.【答案】A 【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”。 6.【答案】D 【解析】do +动词原型的构造表示强调谓语动词。来源： 7.【答案】C 【解析】由radiation和explorers可推想，应选space (太空)。本句意为射线是探险者在太空遇见的已知的危急。 8.【答案】A 【解析】receive表示客观收到；accept表示主观承受。我们受到的辐射并非主观承受。 9.【答案】D 【解析】conventional “传
8、统的”；common “共同的、一般的”；general “一般的、总体的”；normal “正常的”。本句意为：我们每年承受的正常辐射量，应选normal。 10.【答案】D 【解析】shift “移动”；convert “转换”；modify “修改”；vary “变化”。依据句意，所处地点不同，所受辐射量也不一样，应选varies. Passage 6 As the plane circled over the airport, everyone sensed that something was wrong. The plane was moving unsteadily throug
9、h the air, and _1_ the passengers had fastened their seat belts, they were suddenly thrown forward.At that moment, the air-hostess _2_ . She looked very pale, but was quite calm. Speaking quickly but almost in a whisper, she _3_ everyone that the pilot hadfainted and asked if any of the passengers k
10、new anything about machines or at _4_ how to drive a car. After a moment hesitation, a man got up and followed the hostesssintosthe pilot cabin.Moving the pilot _5_ , the man took his seat and listened carefully to the urgent instructions that were being sent by radio from the airport _6_ . The plan
11、e was now dangerously close to the ground, but to everyone relief, it soon began to climb.The man had to _7_ the airport several times insgroupsto become _8_ with the controls of the plane. But the danger had not yet passed.The terrible _9_ came when he had to land. Followinginstructions, the man gu
12、ided the plane toward the airfield. It shook violently _10_ it touched the ground and then moved rapidly along the runway and after a long run it stopped safely. 1. A. although B. while C. therefore D. then 2. A.showed B. presented C. exposed D. appeared 3. A.inquired B. insured C. informed D. instr
13、ucted 4. A. best B. least C. length D. first 5. A. back B. aside C. about D. off 6. A. beneath B. under C. down D. below 7. A. surround B. circle C. observe D. view 8. A. intimate B. familiar C. understood D. close 9. A. moment B. movement C. idea D. affair 10. A. as B. unless C. while D. so 1.【答案】A
14、 【解析】本句意为尽管乘客们都已经系好安全带，他们还是被突然向前抛去。although尽管，引导让步状语从句，符合句意。while当时候；therefore因此；then接着、然后。 2.【答案】D 【解析】show展现、说明；present呈现、陈述，及物动词；expose暴露。appear消失，符合句意。 3.【答案】C 【解析】inform通知、告知，符合句意。inquire询问；insure保险、投保，常与aginst连用；instruct指示、指令。 4.【答案】B 【解析】at best最多、至多；at least至少；at length具体地；at first开头、最先。at least最符合句意。 5.【答案】B 【解析】本句意为把飞行员挪到一边。aside意为一边、旁边，符合句意。back向后；about处处；move off指车辆启程。 6.【答案】D 【解析】beneath和under为介词，后面必需接名词。down向下地，副词。below在
