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 info
It was not "the comet of the century" experts predicted it might be. However, Kohoutek has provided a bonanza of scientific info
admin
2010-07-06
51
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 file 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.
In what respect was Kohoutek a disappointment?
选项
A、It could be seen only through special equipment.
B、It did not approach the Earth.
C、It did not provide valuable scientific information.
D、It was moving too rapidly for scientists to photograph.
答案
A
解析
文章里说到,预测结果是慧星的到来会是“brilliant spectacle”光耀夺目的壮观,而实际上too pale to be seen with the unaided eye。
转载请注明原文地址:https://kaotiyun.com/show/bIDd777K
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
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Fordecades,postersdepictingrabbitswithinflamed,reddenedeyessymbolizedcampaignsagainstthetestingofcosmeticsonani
WhendidMr.Schallerbecomeinterestedinanimals?
A=WashingtonD.C.B=NewYorkCityC=ChicagoD=LosAngelesWhichcity...istheheadquarteroftheSupremeCourt?【P1】_
Periodicallyinhistory,therecomeperiodsofgreattransitioninwhichworkchangesitsmeaning.Therewasatime,perhaps10,
"Down-to-earth"meanssomeoneorsomethingthatishonest,realisticandeasytodealwith.Itisapleasuretofind【C1】______wh
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
WhatisthemainpartoftheGoldenBridge?________________________
随机试题
在Word中,若要用“绘图”工具栏中的“椭圆”按钮画圆,则在拖动鼠标左键需同时按住_________键。
卵巢的形态()
朱某与任某婚后感情不和,朱某经常打骂任某,任某向法院起诉离婚。朱某知道后对任某打骂更甚。审判人员对朱某进行严厉批评,并口头裁定在案件审理前朱某不得对任某进行打骂,且不得随意隐藏、转移、变更和毁损家里的财产。但朱某不但不停而且变本加厉。任某向法院求救,审判人
所谓有效利率是指年初的一笔资金按()进行计算的()与()之比。
会计人员对于()的原始凭证,有权不予受理,并向单位负责人报告,请求查明原因,追究有关当事人的责任。
作为低档物品,吉芬物品的替代效应与价格呈同方向变动,而收入效应与价格呈反方向变动。()
相对于空气和水污染,土壤污染具有隐藏性和滞后性,一旦污染,将严重影响食物、水、空气和生态系统,从而威胁人类健康。______的发展潮流、日益增长的民众需求与刚性趋紧的资源约束之间的巨大矛盾,给世界出了一道难题:如何在高强度______耕地的情况下守住质量“
北约和华约两个组织对峙近半个世纪,这()。
三阶常系数线性齐次微分方程y’’’一2y’’+y’一2y=0的通解为y=______。
Morethanonestudent______everbeentotheGreatWall.
最新回复
(
0
)