首页
登录
职称英语
A scientist once said that studying the stars from the earth is【C1】______ lo
A scientist once said that studying the stars from the earth is【C1】______ lo
游客
2023-09-01
12
管理
问题
A scientist once said that studying the stars from the earth is【C1】______ looking up at the sky from the bottom of a switching pool. Even on the clearest night the earth’s dense atmosphere【C2】______ 30 percent of the light from any star. Air turbulence may cause stars to twinkle.【C3】______ a telescope the stars seem to jump around dizzily.
Because the moon has no atmosphere, astronomers are looking forward to【C4】______ an observatory there. On the moon, there will be no clouds to【C5】______ the view. The sky will appear dark【C6】______ , so astronomers can work twenty-four hours a day. Because there is no air turbulence, the stars will appear【C7】______ through a telescope.
【C8】______ the moon is relatively near the earth, moon-based astronomers will see the stars in the familiar patterns known on【C9】______ . They will not need new star maps of the sky. Stars【C10】______ the moon will appear to move very slowly. Because the earth【C11】______ on its axis once every twenty-four hours earth based astronomers see the stars hurry 【C12】______ the sky each night. The moon rotates on its axis only once a month. To astronomers on the moon, the stars will appear to stand【C13】______ still. Moon-based astronomers will have much more time【C14】______ their telescopes and take time-exposure photographs.
On the earth, mechanical radio noises【C15】______ the airwaves and interfere with the【C16】______ of radio signals from certain stars. A radio telescope【C17】______ on the far side of the moon will be permanently protected from such 【C18】______ .
It won’t be easy to put telescopes on the moon. However, astronomers are【C19】______ the job can be done. They are convinced that the moon is an【C20】______ place to set up an observatory. [br] 【C19】
选项
A、easy
B、possible
C、certain
D、necessary
答案
C
解析
the job can be done(指望远镜安装在月球上)这件事能够完成,语气很肯定,暗示答案是certain。虽然不容易,但科学家坚信能办得到。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2977597.html
相关试题推荐
Scientistswillhaveto_______________________________(提出增加世界粮食供应量的新方法).comeup
It’ssurprisingnewsboundtobringjoytostudentsstudyingforexamsevery
It’ssurprisingnewsboundtobringjoytostudentsstudyingforexamsevery
It’ssurprisingnewsboundtobringjoytostudentsstudyingforexamsevery
[originaltext]Asisknowntoall,scientistsandphilosophershadstudiedt
[originaltext]Asisknowntoall,scientistsandphilosophershadstudiedt
Someday,perhaps,scientistswill______(能够准确地预报地震).beabletoexactlypredictth
[originaltext]Withthedevelopmentofscience,scientistshavediscoveredm
It’sa(47)______oftenrequestedinlonelyheartsadsandscientistshaven
It’sa(47)______oftenrequestedinlonelyheartsadsandscientistshaven
随机试题
Whowantstopayfor"D"-qualityplumbing(管道)?Flytheskieswitha"D"-ra
关于三审制的说法,错误的是( )。A.初审应审读全部稿件 B.复审、终审需具
电流互感器的接线方式有()A.完全星形 B.不完全星形 C.两相
K线理论、切线理论、波浪理论和循环周期理论是股票分析方法中的( )A.基本分析
按公式计算,10个月婴儿正常体重是()A.8kg B.8.5kg C.
呈不规则块片或长条状。有黑褐色树脂和黄白色木部相间的斑纹。气芳香味苦。燃烧时气香
根据埃里克森的心理社会发展理论,发展任务是获得勤奋感而克服自卑感,体验着能力的实
清朝最重要的会审制度是( )。 A.朝审 B.热审 C.三司会审 D.
根据流水施工组织原理,异步距异节拍流水实质上是按无节拍流水组织,引入流水步距概念
泵站的主机组主要包括()等设备。A.水泵 B.动力机 C.电气设备 D.
最新回复
(
0
)