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
2023-07-14
37
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【C2】______. Light gets through, and this is essential【C3】______plants to make the food which we【C4】______. Heat,【C5】______, makes our environments tolerable and some ultraviolet rays(紫外线) penetrate the【C6】______. Cosmic rays of various kinds come【C7】______the air from outer space, but【C8】______quantities of radiation from the sun are screened off.【C9】______ men leave the atmosphere they are【C10】______to this radiation;【C11】______their spacesuits or the walls of their spacecraft, if they are inside,【C12】______prevent a lot of radiation damage. Radiation is the greatest known danger to explorers in【C13】______. Doses of radiation are measured in【C14】______called "rems" (雷目). We all【C15】______radiation here on earth from the sun, from cosmic rays, and from radioactive minerals. The"【C16】______"dose of radiation that we receive each year is about two millirems; it【C17】______according to where you live, and this is a very rough estimate. Scientists have reason to think【C18】______a man can【C19】______far more radiation【C20】______without being damaged; the figure of 60 rems has been agreed. [br] 【C2】
选项
A、stars
B、sun
C、earth
D、space
答案
C
解析
见上题译文。
转载请注明原文地址:https://tihaiku.com/zcyy/2835121.html
相关试题推荐
【B1】[br]【B12】A、BecauseB、ForC、WhenD、StillCthis是指上文中的tobeatouttheflames
[originaltext]Whenpeoplesucceed,itisbecauseofhardwork,butluckhas
[originaltext]Whenpeoplesucceed,itisbecauseofhardwork,butluckhas
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouarein
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouarein
A、Becauseoftheirstrongdesireforgoodhealth.B、Becauseoftheirloveforho
Thedoctor’spracticehas______becauseofhiscarelessness.A、droppedbyB、drop
[originaltext]M:Thenwhydidyouapplyforthisjob?W:That’sbecauseofthe
[originaltext]M:Thenwhydidyouapplyforthisjob?W:That’sbecauseofthe
[originaltext]M:Thenwhydidyouapplyforthisjob?W:That’sbecauseofthe
随机试题
(Havingrejected)by(everyone),thestudent(representative)(resigned)thecom
Thepassageismainlyabout______.[br]Theword"scars"inParagraphOneisclo
TheInputHypothesiswasputforwardbyA、Chomsky.B、Sapir.C、Krashen.D、Hymes.C
______asJimis,hecouldhavedonesuchathing.A、AfoolB、ThefoolC、FoolD、F
TheUnitedStatesestablisheditsfirstnationalpark,Yellowstone,in1872.
Itisnecessarythathe_______theassignmentwithoutdelay.A、handinB、handsin
起重链不得打扭,亦不得拆成单股使用。
辅助设施技术档案中的竣工图纸包括哪些()。微机五防$;$视频监控$;$火灾报警$
A.18 B.18π C. D.
A. B. C. D.
最新回复
(
0
)