首页
登录
职称英语
Space is a dangerous place, not only because of meteors(流星)but also because of r
Space is a dangerous place, not only because of meteors(流星)but also because of r
游客
2024-02-19
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.【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 "rem(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 two milligrams; 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] 【C10】
选项
A、shown
B、exposed
C、faced
D、covered
答案
B
解析
be exposed to“暴露于”,show“展示”:face“面对”。
转载请注明原文地址:https://tihaiku.com/zcyy/3464562.html
相关试题推荐
Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseof
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouarein
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouarein
Nothingcanbewasted,andweare____________(从不为有多余的食物困扰)becausewehavenever
A、Becauseshedidnotlikethelifeofthesouth.B、Becauseshewasborninthe
A、BecauseitisthelargestairportinAmerica.B、Becauseithasagoodsorting
A、Studentsattenditbecauseitisrequired.B、Thestudentlikesthecoursevery
随机试题
[originaltext](1)Withbighandbagsbecomingakeyfashionaccessoryforworking
Educationistheprocessoflearningandknowing,whichisnotrestrictedt
最低工资立法是各国管制劳动市场的通行做法。一些经济学家认为,这种做法会提高失业
心电图特征性地表现为QRS电轴左偏的是A.法洛四联症 B.房间隔缺损 C.室
高校党建工作面临着许多新情况,大学生党建工作出现了一些不容忽视的问题,大学生党员
房地产经纪行业管理的基本模式有政府主管、行业自律性管理以及二者相结合的管理等三种
A房地产公司(以下简称A公司)申请征用B乡基本农田以外的耕地50公顷,建高档
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
旅游供求在( )上的矛盾表现为旅游目的地国家出现的“旅游热点地区”和“旅游冷点
首次确立“准五服以制罪”制度的是( )。 A.《晋律》 B.《唐律疏议》
最新回复
(
0
)