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
It was not "the comet of the century" experts predicted it might be. However,Kohoutek has provided a bonanza of scientific infor
It was not "the comet of the century" experts predicted it might be. However,Kohoutek has provided a bonanza of scientific infor
admin
2014-03-25
73
问题
It was not "the comet of the century" experts predicted it might be. However,Kohoutek has provided a bonanza of scientific information. It was first spotted 370 million miles from Earth, by an astronomer who was searching the sky for asteroids, and after whom the comet was named. Scientists who tracked Kohoutek the ten months before it passed the Earth predicted the comet would be a brilliant spectacle. But Kohoutek fell short of these predictions, disappointing millions of amateur sky watchers, when it proved too pale to be seen with the unaided eye. Researchers were very happy nonetheless with the new information they were able to glean from their investigation of the comet. Perhaps the most significant discovery was the identification of two important chemical compounds—methyl cyanide and hydrogen cyanide—never before seen in comets, but found it the far reaches of interstellar space. This discovery revealed new clues about the origin of comets. Most astronomers agree that comets are primordial remnants from the formation of the solar system, but whether they were born between Jupiter and Neptune or much farther out toward interstellar space has been the subject of much debate. If compounds no more complex than ammonia and methane, Key components of Jupiter, were seen in comets, it would suggest that comets form within the planetary orbits. But more complex compounds, such as the methyl cyanide found in Kohoutek , point to formation far beyond the planets; there the deep freeze of space has kept them unchanged.
Why was Kohoutek referred to as "the comet of the century"?
选项
A、It was thought to be extremely old.
B、It passes the Earth once a century.
C、Scientists predicted it would be very bright.
D、Scientists have been tracking it for a century.
答案
C
解析
从第一段“scientists…predicted the comet would be a brilliant spectacle.But Kohoutek fell short of these predictions”可知.第一句“世纪彗星没有像专家预测的那样”是指彗星不够明亮。
转载请注明原文地址:https://kaotiyun.com/show/AOxd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
What’sthepossiblerelationshipofthetwospeakers?
WhatkindofcityisTokyo?
WhatkindofcityisTokyo?
Thedining-roomopens_______forbreakfast.
Inthelateyearsofthenineteenthcentury,"capital"and"labour"wereenlargingandperfectingtheirrivalorganizationsonm
ACanadianresearcherhasdiscoveredthatsoundtravels【21】______airmorethanone-haftkilometeranhourslowerthanhadbeen
HomingisoneofthemostimportantissuesconcerningChinesepeoplenow.Thefollowinggraphshowsthepriceofhousein1987a
Whenwillshowersreachsouth-westEnglandandthesoutherncoastofWales?
Computersarenowbeingpushedintoschools.Weknowthatmultimediawillmake【21】______easyandfun.Childrenwillhappilyl
Womenheldahighplaceinthe10thand11thcenturiesinsouthern
随机试题
凯撒密码的加密形式为ek(m)=(m+3)=cmod26,假定明文空问与密文空间都是26个大写的英文字母,同时将英文字母按顺序与模26的余数一一对应。试写出明文“OFDEQ”加密后的密文。
从企业人事管理来看,人与工作相互适应表明人事管理活动处于【】
地基的坍塌引起塔吊的倒塌可能会产生( )。
关于硐室施工方法的说法,错误的是()。
会计职业道德的基本工作准则是()。
()的主要区别就是它运用管理会计的概念,用货币形式说明了执行企业“物料计划”带来的效益,实现物料信息同资金信息的集成。
下列关于夏商周时期文化的表述,不正确的是()。
对许多环境学家来说,植物的灭绝(随之而来的是各种农作物种类不断增加的基因一致性)是环境问题中最严重的一个问题。必须采取行动来阻止野生可食植物及不再耕种的可食植物的减少。否则,基因多样性的缺乏可能引起主要农作物的一大部分在一夜之间被毁掉。例如,在1970年,
在SQL语言中,修改基本表的语句是______。
Thebadanddampweatherinthehotareawouldenabletheplantstoget_____quickly.
最新回复
(
0
)