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
2024-02-17
6
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] 【C18】
选项
A、what
B、which
C、that
D、why
答案
C
解析
逻辑衔接题。该从句并不缺少句子成分,故排除what和which;语法上看why和that都可以,这就要从意思及逻辑上判断。此句和下一句间用的是分号,分析它们之间的关系。下旬中有60 rems,而之前有提到100 millirems再看本句,不难发现far more radiation______ this正是这两个数字的比较。也就是分号后的句子只是对分号前信息的进一步说明即为什么是far more,而不是讲have reason to think的原因,故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3458792.html
相关试题推荐
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
Becausesomanypeopleintheirteensandearly20sareincreasinglysociali
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
[originaltext]W:Whydidn’tyouhaveyourphysicsclasstoday?M:Becauseonly
随机试题
Whatisthegreatestpositiveintegerxsuchthat2xisafactorof1210?20Tore
Thenumberoftheescapedprisonersis______.[br][originaltext]Prisonse
若对关系R1按( )进行运算,可以得到关系R2。 A.σ商品名=’毛巾‘V’
有关口腔正常菌群组成特点的描述错误的是A.新生儿口腔内几乎是无菌的 B.新生儿
在颐和园政治活动区中,重要的建筑是( )A.玉澜堂 B.仁寿殿 C.宜芸馆
()主要用于发送简洁、明了的文字信息。A.电话服务中心 B.自动传真 C.
某企业引进新技术后,原材料成本降低了40%,单位人工成本上涨了80%,所需要的工
某网络测试设备企业拥有先进的研发技术,在技术方面,致力于占据领导地位,率先采用新
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
某拟建项目锅炉烟尘产生量为9000t/a,允许排放总量为270t/a,设计除尘效
最新回复
(
0
)