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
2023-07-18
78
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] 【C20】
选项
A、from
B、than
C、as
D、away
答案
B
解析
more (radiation)后应加than。
转载请注明原文地址:https://tihaiku.com/zcyy/2848308.html
相关试题推荐
______(原本定于上周四举行的运动会)wasfinallycanceledbecauseofthebadweather.Thesports
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
随机试题
AccordingtoSamanthaHeller,peopletendtoeatmilkchocolatebecause[origina
A、Itmakespeopleunhealthy.B、Itmakespeopledepressed.C、Itbringspeoplemor
Alargepercentageofthepopulationinthiscountryis______.A、illogicalB、ill
扇子的用途很广泛,除了能使人凉快之外,还可用于舞蹈、装饰等。Fansareusedwidely.Apartfromcoolingpeople,t
第三产程后检查胎膜、胎盘,下列哪项错误( )A.提起胎盘看胎膜是否完整 B.
根据《民法典》,下列哪些情形不得撤销要约?()A.受要约人对要约的内容作出
债券从发行之日起至偿清本息之日止的时间指()。A:债券交易期限B:债券发行期限
投诉表示客户对金融服务的不满,在处理投诉时,银行从业人员要懂得下列()礼仪。
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
下列代理行为中,不属于委托代理的是()。A.招标代理 B.采购代理 C.诉
最新回复
(
0
)