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
56
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] 【C15】
选项
A、talked
B、debated
C、reported
D、revised
答案
C
解析
考查动词词义辨析。联系上下文可知,本句意为“还没有辐射危害数量的 ______ ”,report可用于表示“报告(病例、伤员等)”,符合句意,故选C。talk“谈论”,debate“辩论”,revise“修订,校订”。
转载请注明原文地址:http://tihaiku.com/zcyy/3745415.html
相关试题推荐
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
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
随机试题
A.swallowB.allowC.omittedD.forcedE.urgentlyF.cookedG.refuse
表情肌由下列哪对神经支配A.舌下神经 B.滑车神经 C.舌咽神经 D.三叉
六腑生理功能的特点是A.传化物而不藏,实而不能满B.藏精气而不泻,实而不能满C.
艾滋病治疗的首选药物A、去羟肌苷 B、替诺福韦 C、茚地那韦 D、更昔洛韦
在某次测验中,高水平学生得到了高分,低水平学生得到了低分,说明该测验的哪种质量指
教师的平均工资水平应当( )当地公务员的平均工资水平。A.高于 B.等同于
关于变更担保条件,以下说法正确的是( )。A.在变更担保条件过程中,担保人具有
A.苦杏仁、苏子 B.百部、马兜铃 C.桑白皮、葶苈子 D.白果、枇杷叶
某企业转让一项无形资产(商标权),开具的增值税专用发票上注明的价款为1000万元
A. B. C. D.
最新回复
(
0
)