首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A scientist once said that studying the stars from the earth is【C1】______ looking up at the sky from the bottom of a switching p
A scientist once said that studying the stars from the earth is【C1】______ looking up at the sky from the bottom of a switching p
admin
2013-04-15
53
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.
【C15】
选项
A、interrupt
B、interfere
C、stop
D、jam
答案
D
解析
jam常用于无线电干扰,句中mechanical radio noises证明答案是jam。句意为:在地球上,无线电的机械噪音干扰了空气波的传播。
转载请注明原文地址:https://kaotiyun.com/show/ezB7777K
0
大学英语六级
相关试题推荐
Startingwiththe_________thatthereislifeontheplanetMars,thescientistwentontodevelophisargument.
A、Hehasalotoffreetime.B、Sheknowshelikesacting.C、Manyofhisfriendsareactors.D、He’slookingforanactingjob.B对
A、Quarrelingaboutapicture.B、Lookingfortheircat.C、Arrangingthehouse.D、Repairingtheirfurniture.C选项均为现在分词短语表明,本题可能考查正
Someday,perhaps,scientistswill______(能够准确地预报地震)
Schoolslookingtobancellphonesmayhaveanewexcuse:agrowingnumberofpeoplearedevelopinganallergy(过敏)tometalin
ScientistsWorryMachinesMayOutsmartManArobotthatcanopendoorsandfindelectricaloutletstorechargeitself.Compu
ScientistsWorryMachinesMayOutsmartManArobotthatcanopendoorsandfindelectricaloutletstorechargeitself.Compu
随机试题
欧洲议会行使立法权主要通过的程序包括()
关于在药品保管过程中影响药品质量的药品因素,下列说法不正确的是
不符合交接班制度的做法是
土地管理法》规定,各省、自治区、直辖市划定的基本农田应当占本行政区域内耕地的()以上。
下列关于噪声环境影响评价工作等级划分的依据说法正确的是( )。
关于投资性房地产的后续计量,下列说法正确的有()。
某有限责任公司拟申请发行可转换公司债券。该公司最近一期末经审计净资产额为2亿元人民币,3年前该公司曾发行5年期债券3000万元。该公司此次发行可转换债券额最多不得超过()。
有100元、10元、1元的纸币共4张,将它们都换成5角的硬币,刚好可以平分给7个人,则总币值的范同是多少?()
文中画线句子“没有多久,声纳图上又发现新的目标”中“目标”是______。对原文最后一段有关内容的理解,不正确的一项是______。
【B1】【B19】
最新回复
(
0
)