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
30
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] 【C11】
选项
A、but
B、because
C、so
D、so that
答案
A
解析
本句前半句的意思是:“人们一离开大气层就会接触射线”;后半句意思是:“他们的太空服和太空船会阻止射线造成的损害”。前后应该是转折关系,故用but。
转载请注明原文地址:https://tihaiku.com/zcyy/3464563.html
相关试题推荐
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
Theyalsofinditdifficulttobepleasedbycomplimentsbecausetheybelieveth
A、BecauseitisthelargestairportinAmerica.B、Becauseithasagoodsorting
A、Becauseitisthelocalcustom.B、BecauseanotherlocalcoupleclaimedBaby81
A、Becausethequalityofwaterdecidesitsvolume.B、Becausehealthconditionsa
Becausetheywereforeigners,thetourists______(被拒绝进入)themilitaryexhibitio
随机试题
Forthispart,youareallowed30minutestowriteanessaybasedonthechartb
The"fatherofwaters",theMississippiRiverisoneofthe【C1】______inth
NowthatIhavebeenincollegeforafewweeks,I’m【11】thatitisnotasba
A.a=1,b=0 B.a=0,b为任意常数 C.a=0,b=0 D.a=
下列说法中正确的是()。A.挑檐也可用于降水量小的地区低层建筑的有组织排水B
消化性溃疡病理损伤至少达A.黏膜层 B.黏膜下层 C.黏膜肌层 D.肌层
A.早期食管癌 B.早期胃癌 C.早期大肠癌 D.肺鳞癌
Inrecentdecades,thereisaphenomenon
企业物流信息系统可以划分为()。A.采购层 B.管理层 C.控制层
关于专用设备的性能,下列说法不正确的是( )。A.专门针对某一种或一类对象
最新回复
(
0
)