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
66
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] 【C20】
选项
A、curable
B、capable
C、efficient
D、effective
答案
D
解析
考查形容词词义辨析。curable“能治愈的”,修饰的对象是疾病而不是药物,故可首先排除;capable“有能力的”,修饰的对象是人,也排除;efficient“效率高的”,一般用于形容机器的性能等,也排除。effective“有效的”,通常指能取得预期或先见效果的,符合句意,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3130852.html
相关试题推荐
Veryfewpeoplecouldunderstandthelecturetheprofessordeliveredbecauseits
"Theywereamusedbytheclumsypanda’smovement"is______,becauseitisnotc
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
[originaltext]W:DadeCounty,Floridaisadangerousplacetobethesedays,ac
“Lookatthosebeautifulladies’gowns”is______,becauseitisnotclearwhether
He______the8:20busbecausehedidn’tleavehometill8:25.A、couldn’thaveca
Ididn’tsleepwellbecausethetapinthebathroomwas______.A、drainingB、drop
Itisbecauseofariseinairfares_____they’vesurchargedus10%onthepric
I’dratheryou______bytrainbecausetheweatherforecastsaidtherewouldbe
随机试题
UnderscoringtheimportanceofAsiatotheUnitedStatesinthenewcentury
WriteonyourANSWERSHEETONEacompositionofabout200wordsonthefollow
[originaltext] Thewaytocomplainistoactbusinesslikeandimportant.(20)
下列行列式的值为n的是().
( )不属于识别风险过程的成果。A、已识别风险清单 B、潜在应对措施清单
桥梁工程中的石料强度等级是以边长为75mm×75mm×75mm立方体试件的抗压极
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
甲厂与工程师江某签订了保密协议。江某在劳动合同终止后应聘至同行业的乙厂,并帮助乙
根据《维也纳条约法公约》和《中华人民共和国缔结条约程序法》,关于中国缔约程序问题
一家面包店选择了多家供应商为其供应面粉。下列各选项中,属于该公司货源策略优点的有
最新回复
(
0
)