首页
登录
职称英语
Space is a dangerous place, not only because of meteors(流星)but also because
Space is a dangerous place, not only because of meteors(流星)but also because
游客
2023-07-15
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【S1】______as our protective blanket on earth. Light gets Light, and this is essential for plants to make the food which we eat. Heat ,too, makes our environment【S2】______. Various kinds of rays come through the air from outer space ,but enormous【S3】______of radiation from the sun are【S4】______off. As soon as men leave the atmosphere they are【S5】______to this radiation but their spacesuits or the walls of their spacecraft ,if they are inside ,do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can【S6】______up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been【S7】______on. The trouble is that it is extremely difficult to be sure about radiation damage -- a person may feel perfectly well ,hut the cells of his or her sex organs may he damaged, and this will not be discovered until the birth of【S8】______children or even grandchildren.【S9】______of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to【S10】______the damage done by radiation, but no really effective ones have been found so far.
A)missions B)acts C)decay
D)quality E)quantities F)shelter
G)screened H)deformed I)increase
J)agreed K)endurable L)exposed
M)behaves N)decrease O)put [br] 【S7】
选项
答案
J
解析
agree on意为“对…取得一致意见”,科学家八人们能够承受辐射的最大标准方面达成—致意见,那就是60个 rems。
转载请注明原文地址:https://tihaiku.com/zcyy/2840534.html
相关试题推荐
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofr
随机试题
[img]ct_epem_epelisv_01911(20097)[/img][br][originaltext]M:Theboyissleepi
Someobservershaveattributedthedramaticgrowthintemporaryemploymentt
Concernsafewyearsagothatstudentswouldbeforcedtousestimulantsin
[originaltext]Thosewhousesolarenergyhelpussaveourpreciousfuel.As
[originaltext]W:Johnmusthavebeenjokingwhenhesaidthathewasgoingtoq
只能提高知晓率的是A.健康教育 B.健康促进 C.卫生宣传 D.社会动员
在基金信息披露中应用XBRL(可扩展商业报告语言),有利于促进信息披露的规范化、
厌食,脘腹胀满,嗳气酸腐辨证为A.脾胃气虚 B.湿邪困脾 C.食滞胃脘 D
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
商业银行在计量操作风险监管资本时,可以将保险理赔收入作为操作风险的缓释因素,但保
最新回复
(
0
)