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
55
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
Inthelateyearsofthenineteenthcentury,"capital"and"labour"wereenlargingandperfectingtheirrivalorganizationsonm
Willpeopleevertamethedestructive,oftendeadlyhurricane?Eitherscientistsormeteorologistsdonotyetunderstandthefor
Mostpeoplewhotravellongdistancescomplainofjetlag(喷气飞行时差反应).Jetlagmakesbusinesstravelerslessproductiveandmorepr
ACanadianresearcherhasdiscoveredthatsoundtravels【21】______airmorethanone-haftkilometeranhourslowerthanhadbeen
Exactlywherewewillstandinthelongwaragainstdiseasebytheyear2050isimpossibletosay.【61】Butifdevelopmentsinr
Whenwillshowersreachsouth-westEnglandandthesoutherncoastofWales?
AccompanyingthegeneraltendencyofE-mailerstobeinformalisthetendencyofreaderstobemoreforgivingthanreadersofpr
Ihavenoticedthatchildrenarenotevenbeingschoolinsocialgraces.AtaSundaybrunch,aclownwasmakingballoonanimals
Manypublicationsmadeprivateinquiriesbeforepresidentialelection,generallybymeansofquestionnairessenttosubscribers
Apoliceman
随机试题
Whatwouldtheworldlooklikewithoutthedollardomination?USofficialsare【C1】________outadealtoendthegovernmentshutd
事业部制结构的特点是()
下列哪一项不属于外阴癌发生的高危因素
A.肾阳虚B.肾阴虚C.肾精不足D.肾气不固E.肾不纳气
某项固定资产原值为5万元,预计使用年限为6年,净残值为2000元,采用年数总和法进行折旧时,第三年折旧额为()元。
经省、自治区、直辖市人民政府批准,经济落后地区城镇土地使用税的适用税额可以适当降低,但降低额不得超过《中华人民共和国城镇土地使用税暂行条例》规定最低税额的20%。()
心理咨询师说“您希望在哪方面得到我的帮助呢?”这种提问方式属于();心理咨询师对求助者实施心理测验时有何不妥()。
某单位男职员人数是女职员人数的,已知男职员比女职员少380人,问该单位一共有多少人?
多年以来,老师已著作等身,那些森林般青翠、幽深的散文,蓊蓊郁郁地,__________了我心底最萧索的季节。她笔下炼过的字,锻过的句,一刀一斧___________一座座关于“生”的雕塑,那种文字不是平面的,而是雕塑一般——固体的、具象的、静默而至美的。填
A、EnrolhiminaNewcastlefootballclub.B、Sendhimtoanafter-schoolartclass.C、Forbidhimtodrawinhisworkb
最新回复
(
0
)