首页
登录
职称英语
Space is a dangerous place, not only because of meteors(流星)but also because
Space is a dangerous place, not only because of meteors(流星)but also because
游客
2023-07-15
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【S1】______as our protective blanket on earth. Light gets Light, and this is essential for plants to make the food which we eat. Heat ,too, makes our environment【S2】______. Various kinds of rays come through the air from outer space ,but enormous【S3】______of radiation from the sun are【S4】______off. As soon as men leave the atmosphere they are【S5】______to this radiation but their spacesuits or the walls of their spacecraft ,if they are inside ,do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can【S6】______up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been【S7】______on. The trouble is that it is extremely difficult to be sure about radiation damage -- a person may feel perfectly well ,hut the cells of his or her sex organs may he damaged, and this will not be discovered until the birth of【S8】______children or even grandchildren.【S9】______of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to【S10】______the damage done by radiation, but no really effective ones have been found so far.
A)missions B)acts C)decay
D)quality E)quantities F)shelter
G)screened H)deformed I)increase
J)agreed K)endurable L)exposed
M)behaves N)decrease O)put [br] 【S5】
选项
答案
L
解析
expose 与to连用,意为“暴露”,例如:to expose one’s skin to the sun(把皮肤暴露在阳光下)。本文中出现了介词to,所以沿用了上面提到的用法,表示人们一旦离开大气层就会暴露在辐射之下。
转载请注明原文地址:https://tihaiku.com/zcyy/2840532.html
相关试题推荐
[audioFiles]audio_eufm_j01_155(200910)[/audioFiles]A、Becauseshedidn’tfulfill
Hisgirlfriendlefthimbecausehe______(对她遭受的痛苦漠不关心).wasindifferenttoher
Theauthorreferstotheoceanbottomasa"frontier"inParagraph1becauseit
Theauthorreferstotheoceanbottomasa"frontier"inParagraph1becauseit
【B1】[br]【B10】A、BecauseB、ThoughC、WhetherD、IfD结构衔接题。这句的意思是“如果选不到这些课程的话,还会有许多
Hewasarrestedbythepolicebecausehe__________(对这场交通事故负有责任)wasresponsiblef
Skydiving,adifficultanddangeroussport,isverypopular______bothmenand
Icouldn’tsleeplastnightbecausethetapinthebathroomwas______.A、draining
The__________oftherelieftothefloodedareawasheldupbecauseoftheincon
Itwasdifficultforhimtobuygoodshoesbecausehehadsuchabig______off
随机试题
PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbythepr
Redisthe______colorofaweddinggowninChinaalthoughsomebridesliketo
Canadianelectionsareheldatleastevery______years.A、4B、5C、6D、7B加拿大大选每5年
试讲题目:故事《大熊猫的拥抱节》 清晨,大熊早早就出了门。今天是森林城一年一度
呼吸链中属于脂溶性成分的是A.CoQ B.FMN C.NAD D.Cyt
沥青混合料拌和时应先将各种矿料加热拌和后再加沥青。
下列权利中,不属于物权的是()。A.抵押权 B.房屋产权 C.
共用题干 患者男性,45岁,暴饮暴食后出现上腹阵发性疼痛,并伴有腹胀,恶心呕吐
SWOT分析方法中,“S”和“W”分别代表()。 A.劣势;机会B.优势;
汉宣帝地节四年下诏曰:“自今子首匿父母、妻匿夫、孙匿大父母,皆勿坐。其父母匿子、
最新回复
(
0
)