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
49
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] 【C19】
选项
A、increase
B、decrease
C、relieve
D、relax
答案
B
解析
考查动词词义辨析。由常识可知,药物可帮助减少损伤,故可首先排除A项increase;relieve“缓解,减少”,一般指减轻疼痛等症状,与句意不符;relax“使轻松,放松”强调劳累后休息,也不符合句意;B项decrease意为“减少”,符合句意,故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3130851.html
相关试题推荐
Wehavetoraiseourpricesbecauseoftheincreaseinthecostof______materi
A、Becausetheyareunawareofit.B、Becausetheyenjoyloudmusic.C、Becausethe
PASSAGEONE[br]Whyaretheflowersandcandlesbeingdismantled?Becausethefu
Veryfewpeoplecouldunderstandthelecturetheprofessordeliveredbecauseits
(1)BecauseImarriedaphotographer,oncewehadchildren,ourholidaycards
(1)BecauseImarriedaphotographer,oncewehadchildren,ourholidaycards
PASSAGETHREE[br]WhyistheareaborderingPenchdangerousforpredators?Becau
"Theywereamusedbytheclumsypanda’smovement"is______,becauseitisnotc
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
随机试题
There______nothingmorefordiscussion,themeetingcametoanendhalfanhou
按照我国相关教育法律法规的规定,下列哪种行为可以使得教师丧失教师资格()。A.
根据《中华人民共和国传染病防治法》规定,在中华人民共和国领域内的(),必须
"Angle理想"认为A.每一个恒牙与同一牙弓内的左右邻牙保持理想的邻接关系
能够从经济和金融层面揭示股票价格决定的基本因素以及这些因素对价格的影响方式和影响
A.热因热用B.寒因寒用C.塞因塞用D.通因通用E.虚则补之对热结旁流应采用的治
A.化学发光免疫分析B.化学发光酶免疫分析C.微粒子化学发光免疫分析D.电化学发
Thechangeinthatvillagewasmiraculou
随着房地产业的迅速发展,金融资本与房地产业资本结合的趋势越来越明显。银行信贷资金
下列主体中,具有保证人资格的是( )。A.公益事业单位 B.建筑行业协会 C
最新回复
(
0
)