首页
登录
职称英语
A. endurable B. protection C. exposed D. if E. untilF. extremely G. acts as H.
A. endurable B. protection C. exposed D. if E. untilF. extremely G. acts as H.
游客
2023-10-29
39
管理
问题
A. endurable B. protection C. exposed D. if E. until
F. extremely G. acts as H. decrease I. curable J. disaster
K. attributed L. danger M. effective N. before O. essential
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【C1】______ our protective blanket on earth. Light gets through, and this is【C2】______ for plants to make the food we eat. Heat, too, makes our environment【C3】______. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are【C4】______ to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known【C5】______ to explorers in space. The unit of radiation is called "rem (雷姆)". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged. The trouble is that it is【C6】______ difficult to be sure about radiation damage—a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered【C7】______ the birth of deformed children or even grandchildren.
We simply do not know yet how men are going to get on when they spend weeks and months outside the【C8】______ of the atmosphere, working in a space laboratory. Drugs might help to【C9】______ the damage done by radiation, but no really【C10】______ ones have been found so far. [br] 【C1】
选项
答案
G
解析
空格所在句缺少谓语,再根据全文的时态和主语The atmosphere,可知此处应填入动词的第三人称单数形式。备选项中acts as“充当,起……的作用”,符合句意,即大气层起到了地球保护毯的作用。
转载请注明原文地址:http://tihaiku.com/zcyy/3141297.html
相关试题推荐
Thescandalbeingexposed,hewasremovedfromofficeconsequently.Theunderlin
OldAmericansareextremelyreluctanttobuyon______andlikelytosaveasmuch
A.endurableB.protectionC.exposedD.ifE.untilF.extremelyG.actsasH.
A.endurableB.protectionC.exposedD.ifE.untilF.extremelyG.actsasH.
A.endurableB.protectionC.exposedD.ifE.untilF.extremelyG.actsasH.
A.endurableB.protectionC.exposedD.ifE.untilF.extremelyG.actsasH.
A.endurableB.protectionC.exposedD.ifE.untilF.extremelyG.actsasH.
Theparty,______Iwastheguestofhonour,wasextremelyenjoyable.A、bywhichB
PASSAGETWO[br]Howcanmorefishtolerateextremelycoldwater?Bytransplantin
Theparty,______Iwastheguestofhonour,wasextremelyenjoyable.A、bywhich
随机试题
Whatisthetutor’sopinionofthefollowingcompanyprojects?ChooseSIXanswer
ReligioninAmericanLifeDiversityisthechieffeatur
A.苯巴比妥钠 B.硫喷妥钠 C.氯胺酮 D.丙泊酚 E.依托咪酯门诊小
下列哪项不是经间期出血的特点A.排卵期周期性阴道少量出血 B.阴道出血常少于正
共用题干 GlobalWarmingFewpeoplenowquest
案例六: 阅读材料回答下列问题: 一般资料:求助者,女性,40岁,已婚,本科
最常用于诊断颌骨恶性肿瘤的放射性核素是
(2018年真题)劳动者找到最适合自己的偏好和技能的工作需要一定的时间而引起的失
某技术方案的期初投资为1200万元,建设期1年,运营期每年获得净现金流入300万
关于戴无菌手套,脱污染手套,下述描述哪项是错误的 A.戴无菌手套时,注意勿触及
最新回复
(
0
)