首页
登录
职称英语
Space is a dangerous place, not only because of meteors (流星) but also becaus
Space is a dangerous place, not only because of meteors (流星) but also becaus
游客
2023-07-14
63
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 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 "rems" (雷目). 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 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】______far more radiation【C20】______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
本句应填入引导宾语从句的代词,而从句不缺少主语和宾语,因而不选择what和which,又加之主句是陈述语气,故选择that。
转载请注明原文地址:http://tihaiku.com/zcyy/2835137.html
相关试题推荐
They______becausethelight’son!A、musthavegoneoutB、can’thavegoneoutC、
Don’thesitatetodoitbecausewhatyoudo____________(对我没有很大关系).doesnotmak
I________(想暑假外出旅游)becauseIenjoymeetingpeopleandseeingnewplaces.feell
Icouldn’tsleeplastnightbecausethetapinthebathroomwas______.A、draining
They____________(被拒绝进入)themilitaryexhibitionbecausetheywereforeigners.
Itwasdifficultforhimtobuygoodshoesbecausehehadsuchabig______off
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecause
随机试题
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseof
Donna:Canyoutellmewherethelibraryis?Harry:Ofcourse,it’sbehindthe
急性胰腺炎患者应()。A.少量多餐 B.低盐饮食 C.高维生素饮食 D
患者,女,33岁。受凉后自觉时冷时热,发作无规律,兼见口苦、咽干、目眩、胸胁苦满
下列关于大体积混凝土施工时温控指标的叙述,错误的是( )。 A、混凝土浇筑体
银行市场环境分析时,属于经济与技术环境范围内的有( )。A.经济增长速度
关于我国商业银行的各类定期存款,下列说法正确的有()。A.整存整取的起存金
人只有靠教育才能成为人,人完全是教育的结果”是( )的言论。A、卢梭 B
以下所列出境货物包装物,需实施除害处理的是()。 A.铁托盘B.塑料
商业银行的信贷业务应是全面的、分散的,对单一客户的授信额度要控制在一定范围之内。
最新回复
(
0
)