首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphe
Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphe
admin
2013-02-24
31
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.
【C8】
选项
A、valid
B、enormous
C、various
D、proper
答案
B
解析
词义辨析题,valid 意为“有效的”,enormous 意为“大量的”,various 意为“各种各样的”,proper 意为“合适的”,结合句意“但 ______ 数量的来自太阳的射线被挡开了”可知,B正确
转载请注明原文地址:https://kaotiyun.com/show/Wju7777K
0
大学英语四级
相关试题推荐
Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesandtoblamethemformostofthemisunderstandingsbetw
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
A、Howtodealwithcarproblems.B、Howtowriteathank-youletter.C、Thekindheartednessofolderpeople.D、Theimportanceofe
A、Farmers.B、Citypeople.C、Businesspeople.D、Students.A选项表明,本题与某一行业的人群有关。由女士提到的Itwasreallypopularamongfarmers可知,农民很喜欢这样
A、Themancanaskherforhelp.B、Theman’sunclewon’thelphimatall.C、Theman’suncleisakind-heartedperson.D、Themanc
StepstoMoreHappinessTurningPointsThereis,formanyofus,amomentinlifewhenwemakeachoicethatchangesusfore
A、Becauseshecaresverylittleaboutrest.B、Becauseshefeelswellenoughtoworkon.C、Becauseshehastofinishherworkfir
A、Itisveryimpressive.B、Itisanamethatbringshergoodluck.C、Itdoesnotexpressherpersonality.D、Itsoundsverybeaut
随机试题
A.“二杠”B.“大挺”C.“单门”D.“三岔”E.“莲花”马鹿茸具1个分支者习称()。
既能利尿通淋,又能清心除烦的药物是
吸收过程中一般多采用逆流流程,主要是因为()。
患者心悸怔忡半年,形寒肢冷,浮肿少尿,唇舌暗淡青紫,脉沉微,宜诊为()
下列不属于临床药理学研究内容的是()。
下列关于《巴塞尔新资本协议》及信用风险量化的说法,不正确的()。
导游人员在与旅游者交谈时,应避免涉及对方的隐私,属于旅游者的隐私是()。
复数的共轭复数在复平面上所对应的点位于().
评述洛克的绅士教育思想。
在中国北部有这样两个村落,赵村所有的人都是在白天祭祀祖先,李庄所有的人都是在晚上才祭祀祖先,我们确信没有既在白天也在晚上祭祀祖先的人。我们也知道李明是晚上祭祀祖先的人。依据以上信息,能断定以下哪项是对李明身份的正确判断?
最新回复
(
0
)