首页
登录
职称英语
Space is a dangerous place, not only because of meteors (流星) but also becaus
Space is a dangerous place, not only because of meteors (流星) but also becaus
游客
2023-10-26
11
管理
问题
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 【C1】_____ our protective blanket on earth. Light gets through, and this is 【C2】_____ for plants to make the food 【C3】_____ we eat. Heat, too, makes our environment endurable. Various kinds of rays 【C4】_____ the air from outer space, 【C5】_____ enormous quantities of radiation from the sun are 【C6】_____ off. As soon as men leave the atmosphere they are 【C7】_____to this radiation but their spacesuits or the walls of their spacecraft, 【C8】_____ they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known 【C9】_____ to explorers in space. The unit of radiation is called "rem (雷姆)". Scientists have reason to think that a man can 【C10】_____ far more radiation 【C11】_____ 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely 【C12】_____ to be sure about radiation damage—a person may feel perfectly well, but the 【C13】_____ of his or her sex organs may be damaged, and this will not be discovered 【C14】_____ the birth of deformed children or even grandchildren.
Missions of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been 【C15】_____, but the Apollo missions have been quite 【C16】_____. We simply do not know yet how men are going to get on when they 【C17】_____ weeks and months outside the 【C18】_____ of the atmosphere, working in a space laboratory. Drugs might help to 【C19】_____ the damage done by radiation, but no really 【C20】_____ ones have been found so far. [br] 【C16】
选项
A、short
B、long
C、dangerous
D、risky
答案
A
解析
考查上下文语义逻辑。由下文的weeks and months等字眼可推断此处讲阿波罗号的飞行任务用时相当短。故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/3130848.html
相关试题推荐
Alltheflights______becauseofthesnowstorm,wehadtotakethetraininstea
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
Wehavetoraiseourpricesbecauseoftheincreaseinthecostof______materi
Theeldestchildisthoroughly_____becausetheyalwaysgivehimwhateverhewa
PASSAGETHREEBecauseitwillmakeone’sdietbecomehighinfat.根据题干中的McDonald’s
PASSAGEFOURBecausewomenmanagerslacksufficientexperience.根据题干中的recruitingw
Thenorthbound______isclosedbecauseofanaccident,causingbigtrafficjams
Thefactoryhadtolay______onethirdofitsworkersbecausethedemandforit
Thedoctorsaysthatthesituationisnotoptimisticbecausethisacuteinfectio
随机试题
Mostpeopleareawarethatoutdoorairpollutioncandamagetheirhealth,bu
证券金融公司应当每个交易日公布( )。 ①转融资余额 ②转融券余额 ③转
票据丧失后,下列采取的补救措施中错误的有()A.公示催告 B.行使
随着中国老龄化进程加快,养老问题困扰不少普通家庭。2012年全国老龄工作会议:截
生产进度控制的目标是()。A:降低能耗 B:缩短生产周期 C:准时生产 D
下列倡议与“节能减排”的主题不符合的是()A.提倡多步行多骑自行车,少开家庭轿车
依据劳动法律事实是否以当事人的意志为转移,法律事实可分为()A:劳动法律行为
简述定性分析的方法。
A市B县的甲村与乙村相邻,2018年,两村因交界处的50亩土地使用权
(2018年真题)用工料单价法计算建筑安装工程费时需套用定额预算单价,下列做法正
最新回复
(
0
)