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
2023-07-16
14
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] 【C5】
选项
A、again
B、also
C、besides
D、too
答案
D
解析
逻辑衔接题。生格所在句讲的是heat(热)对地球的作用,与前一句在意义上是并列关系,因此应选表并列关系的词。选项中again意为“再次”,应排除;also在句中通常不用逗号隔开,应排除;besides意为“除…之外”一般用在句首,应排除;too可用在句中,且可用逗号隔开,所以D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2842515.html
相关试题推荐
Itisdifficultto______theclimateofEnglandbecausethevariationsaresof
Itissensibleforhimtoactasifheweremadinthecourt,becauseinthatca
[originaltext]ThetragedyofTitanicwillalwaysberemembered,becauseshe
A、BecauseheisfromGermany.B、BecausethecompanywasestablishedbyaGerman.
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
Smokingisconsidereddangeroustothehealth.Ourtobacco-seller,Mr.Johns
随机试题
[originaltext]WhenNancyLublinreceived$5,000fromhergrandfatherin1996
流产是指凡妊____、胎儿体重____而终止者,早期流产发生于妊娠____,晚期
对于核子密度湿度仪法,说法错误的是( )。 A、利用放射性元素测量各种土的密
下列选项中,与“李宁和刘翔是运动员”的判断类型相同的一项是( )。A、魏来和石
根据《环境影响评价法》的规定,下列关于建设项目的环境影响评价的表述中不符合相关规
简述现代企业人力资源管理各个历史发展阶段的特点。
小明(13岁)在父母离婚后,跟随母亲一起生活。 其父对小明仍有教育义务吗?为什
风湿性心脏瓣膜病患者出现下列哪种征象应首先考虑有感染性心内膜炎的可能?( )A
某商店花10000元进了一批商品,按期望获得相当于进价25%的利润来定价,结果只
下列选项不属于工程项目进度控制的依据的是()。A.项目管理计划 B.招标
最新回复
(
0
)