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
2016-06-25
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/KRRd777K
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
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.
Theordeals(神判法)wereappealsthesupernaturaltodeterminetheguiltorinnocenceoftheaccused.Theywere【21】______theJud
Theordeals(神判法)wereappealsthesupernaturaltodeterminetheguiltorinnocenceoftheaccused.Theywere【21】______theJud
Whatisnecessaryinagoodresume?
Withthedevelopmentofthesociety,especiallythedevelopmentofeconomy,thelifebothincountrysideandcitychangesalot.
Accordingtothespeaker,howdocommutersfeelaboutcrossingtheGoldenGateBridgebycar?
BankofAmerica,holdingcompanyfortheSanFrancisco-basedBankofAmerica,wasonceunchallengedasthenation’sbiggestbank
Whatdoofficesystemsrefertoaccordingtothepassage?
Lookatthefollowingpictureandwriteanarticleonadvertisement.Yourarticleshouldcoverthepointsbelow:(1)descri
Australia
随机试题
“小人物”
下列关于代为清偿的表述正确的是()
长期血压增高可引起哪些靶器官损害
热性哮喘症见大便干秘的机理是
按定额反映的实物消耗内容分类,公路工程定额可分为()。
作为货币政策工具之一,公开市场操作具有的优点有()。
二胡曲《二泉映月》的旋律发展手法是()。
欧文1816年在苏格兰设立______,这是教育史上的第一次幼儿教育实验。
下列历史事件中,发生在宋代的有()。
揣摩指的是对自身以外的人和事的推测、估量、判断等。揣摩必须以良好心态为基础、以实践经验总结为依据、以认真分析思考为前提,能够比较全面、客观和准确地推测、估量、估计、判断他人内心情感,是人们认识和处理复杂问题时必需的一种基本功。根据上述定义,下列属于揣摩的
最新回复
(
0
)