首页
登录
职称英语
Space is a dangerous place, not only because of meteors (流星) but also because of
Space is a dangerous place, not only because of meteors (流星) but also because of
游客
2024-02-17
4
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] 【C6】
选项
A、environment
B、space
C、atmosphere
D、earth
答案
C
解析
逻辑衔接题,结合句意及常识可知,紫外线穿透的应该是atmosphere(大气),所以C正确
转载请注明原文地址:https://tihaiku.com/zcyy/3457368.html
相关试题推荐
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
随机试题
[originaltext]Theice-creamsundaeisanoriginalAmericandish.Icecream
郭沫若的著名作品《凤凰涅檗》的体裁是()A.诗歌 B.散文 C.小说 D
Graves病时,下列哪一项血清激素水平变化是正确的:A.T3、T4升高,TS
从()到(),是“两个一百年”奋斗目标的历史交汇期。A.二〇二
紫苏不具有的功效是( )。A.发汗解表 B.行气宽中 C.行气安胎 D.
固经丸治疗经期延长的适应证候是A.实热证 B.虚热证 C.血虚证 D.肾虚
根据《测绘法》,卫星导航定位基准站建设单位未报备案的,给予警告,责令限期改正;逾
玉女煎的功用是( )。A.清肝泻火 B.清胃凉血 C.清胃滋阴 D.滋阴
根据宪法和法律,下列哪些表述是不正确的? A.被剥夺政治权利的公民不再享有科学
(2019年真题)根据企业会计准则的规定,符合资本化条件的资产在购建或生产的过程
最新回复
(
0
)