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
10
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:https://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
Peoplebornintheautumnlivelongerthanthoseborninthespring.Andthe
Asmallgroupofsalt-and-pepperhairedwomenwholiveoutsideJackson,Miss
如果后牙缺牙间隙垂直距离或者近远中径较小,可以考虑使用的修复失牙的方法为(
患者,男,16岁,5个月前无明显诱因于面部、上胸背部出现丘疹、脓疱、结节、囊肿,
经纪人的利润来源主要是()。A.买卖价差 B.手续费 C.投资收入 D.
甲氰咪胍宜餐时或睡前服用,其目的是A.有利胃酸分泌 B.中和胃酸作用 C.维
某建为26m的商业综合体,设有火灾自动报警系统和自动喷水灭火系统。对位于地上三层
交易所重组与公司化是21世纪以来证券市场全球化趋势的表现之一。( )
关于期货人员的期货从业人员资格注销,下面说法正确的有()。A.期货从业人员辞职
关于暂定税率适用的原则,下列表述错误的是:A.适用最惠国税率的进口货物同时有暂
最新回复
(
0
)