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
15
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] 【C16】
选项
A、conventional
B、common
C、general
D、normal
答案
D
解析
conventional“传统的”;common“共同的、普通的”;general“一般的、总体的”;normal“正常的”。本句的意思为:“我们每年接受的正常辐射量……”,故选normal。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2835135.html
相关试题推荐
【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
[audioFiles]audio_eufm_j75_001(20082)[/audioFiles]A、Becausethepolicemanstopp
Mr.WhiteandMrs.Whitehaveto____________________(缩短蜜月)becausethesecretar
Hewasarrestedbythepolicebecausehe__________(对这场交通事故负有责任)wasresponsiblef
I________(想暑假外出旅游)becauseIenjoymeetingpeopleandseeingnewplaces.feell
Skydiving,adifficultanddangeroussport,isverypopular______bothmenand
Icouldn’tsleeplastnightbecausethetapinthebathroomwas______.A、draining
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
随机试题
女性,45岁,血性白带2个月,妇检阴道未受肿瘤侵犯,宫颈菜花样,宫体正常大小,宫
某中年男患者因心脏病发作被送到急诊室。症状及检查结果均明确提示心肌梗死。患者很清
成人脊髓下端一般平对( )A.第1腰椎下缘 B.第2腰椎下缘 C.第3腰椎
A.清肝利胆,泻火解毒 B.清热凉血 C.清热利湿 D.清热解毒 E.利
月经规律的妇女,推算预产期常用的时间是A:末次月经干净之日 B:末次月经开始之
血液常规分析所用的抗凝剂()A.枸橼酸钠B.EDTA-KC.肝素D.草酸盐E.
可出现鼓音<P>A.胸腔积气<br>B.胸腔积液<br>C.肺气肿<br>D.肺
简述现代企业人力资源管理各个历史发展阶段的特点。
H.S分类目录的类注释、章注释和子目注释是11.3不可分割的部分,与9.3品目条
某建筑公司1名瓦工在搭设的毛竹脚手架上浇筑阳台混凝土时,直接将混凝土卸在该脚手架
最新回复
(
0
)