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
28
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] 【C7】
选项
A、across
B、to
C、from
D、through
答案
D
解析
这里的come through相当于penetrate,穿透。come across“偶遇”;come to“来到”;come from“来自”。本句意思为:各类来自外部空间的宇宙射线穿透大气层……,故选come through。
转载请注明原文地址:https://tihaiku.com/zcyy/2835126.html
相关试题推荐
Insummer,manyNorthAmericansgotoEuropebyboatbecausetheyexpecttohave
【S1】[br]【S5】M下文...andsometimesdangerous.提示:连词and前也应当填一个形容词,而且应当是让人们感到不舒服之类的形
Wehadourtelephone______becausewedidn’tpaythebill.A、cutacrossB、cutdo
Oneofthemostdangerousdrugsforpregnantwomentoconsumeisalcohol.Be
Oneofthemostdangerousdrugsforpregnantwomentoconsumeisalcohol.Be
Oneofthemostdangerousdrugsforpregnantwomentoconsumeisalcohol.Be
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
随机试题
Theeconomystarted2006extremelystronginspiteofrecordoilpricesand
[originaltext]Ihopeyouhaveallfinishedreadingtheassignedchapteron
可引起腹膜炎的泌尿系统损伤是()A.肾挫裂伤 B.膀胱腹膜外破裂 C.膀
甲公司是一家在上海证券交易所上市的大型国有集团公司,主要从事M产品的生产与销售,
腺垂体分泌的激素,不包括以下哪项A.FSH、LH B.TSH C.ACTH
个人综合消费贷款是银行向借款人发放的用于指定消费用途的人民币()贷款。A.抵
能被胆碱酯酶水解产生对抗磺胺类药物抗菌作用的局部麻醉药是A.利多卡因B.普鲁卡因
生物碱碱性大小的表示方法是A.K值 B.pH C.pK D.K值 E.以
社会主义应当有高度的民主、完备的法制和安定的社会环境。在初级阶段,不安定因素甚多
卫生学评价中表示声音强度最常用的单位是A.声强级 B.声功率级 C.声压级
最新回复
(
0
)