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
2023-07-16
40
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(宇宙的)rays of various kinds come【C7】______the air from outer space, but【C8】______quantities of radiation from the sun are screened off. As【C9】______as 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(雷姆)". 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 100 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】______up with far more radiation【C20】______this 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
介词用法题。本句意为“各类来自太空的宇宙射线____ 大气层”,只有come through与句意相符,在此相当于penetrate(穿透),所以D正确。come across意为“偶遇”,come to意为“来到”,come from意为“来自”,均与句意不符。
转载请注明原文地址:https://tihaiku.com/zcyy/2842517.html
相关试题推荐
[audioFiles]audio_eufm_j01_155(200910)[/audioFiles]A、Becauseshedidn’tfulfill
Becausehedoesn’tlikemefornoreason,he______mewheneverwemeet.A、overlo
Theauthorreferstotheoceanbottomasa"frontier"inParagraph1becauseit
They______becausethelight’son!A、musthavegoneoutB、can’thavegoneoutC、
【B1】[br]【B10】A、BecauseB、ThoughC、WhetherD、IfD结构衔接题。这句的意思是“如果选不到这些课程的话,还会有许多
Mr.WhiteandMrs.Whitehaveto____________________(缩短蜜月)becausethesecretar
Don’thesitatetodoitbecausewhatyoudo____________(对我没有很大关系).doesnotmak
Hewasarrestedbythepolicebecausehe__________(对这场交通事故负有责任)wasresponsiblef
They____________(被拒绝进入)themilitaryexhibitionbecausetheywereforeigners.
Itwasdifficultforhimtobuygoodshoesbecausehehadsuchabig______off
随机试题
z压缩因子法是依据理想气体计算参数修正后得出实际气体近似参数,下列说法中不正确的
根据《水利水电工程等级划分及洪水标准》(SL252-2017),土石坝级别为3级
急性胰腺炎患者禁食脂肪的目的是A:防止呕吐 B:减轻腹痛 C:减少腹胀 D
对于可修复的功能落后的折旧,采用重置成本计算折旧时,折旧包括的项目有()。A.
社会工作者在面谈过程中有意识地与服务对象进行的治疗性沟通具有()功能。A.提供
下列年份中,清洁能源机组上网电量占当年并网机组总上网电量比重最髙的是(
在风险管理的“三道防线”中,第三道风险防线是()。A.业务条线部门 B.
出现下列( )情形之一的,法定代理或者指定代理终止。A.代理人丧失民事行为能力
脑的最古老部位是()。(2010-11)A:小脑 B:间脑 C:大脑 D:
为了牙龈的健康,全冠龈边缘最基本的要求是A、应位于龈上 B、应位于龈沟内 C
最新回复
(
0
)