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
2024-09-05
46
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:http://tihaiku.com/zcyy/3745416.html
相关试题推荐
Myunclecan’tget_____becausehehasrheumatism(风湿病).A、aboutB、onC、through
Mostenvironmentalproblemsexistbecauseadequatemeasuresforpreventingthem_
Iexpecttheorangejuice______undrinkablebecauseithasbeenputtherefors
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
随机试题
CONSTRAIN:A、concurB、splitC、unburdenD、liberateE、discardD
Theycallthemthenewbreadearners.Theyarewomen,andtheyaresettota
非正式权力来源于()。A.上级委任 B.成员共同授予 C.法定权 D.强
肺胀最早记载于A.《诸病源候论》 B.《内经》 C.《难经》 D.《金匮要
Atthattime,wedidnotfullygraspthe
董老师总是希望在课堂上尽可能地满足学生爱与被爱的需要。董老师的做法体现了哪种课堂
在现场审核中,抽样计划的合理性与()密切相关。[2007年真题] A.
某独立建造的老年人照料设施,建筑高度24m,每层建筑面积1500m2。地上
老年人在入住养老机构的过程中不同阶段会有不同的心理反应,在()阶段,老人和家人
(2020年真题)关于建设工程施工招标文件,下列说法正确的是()。A.工程量清单
最新回复
(
0
)