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
48
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.
According to the passage, what is one major component of Jupiter?
选项
A、Hydrogen cyanide.
B、Methyl cyanide.
C、Hydrogen.
D、Ammonia.
答案
D
解析
文章倒数第四行:If compounds no more complex than ammonia and methane,key components of Jupiter,were seen in comets.如果混合物只是氮和甲烷,那么在彗星上发现木星的主要元素是氮和甲烷。
转载请注明原文地址:https://kaotiyun.com/show/VOxd777K
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
Whenamagazineforhigh-schoolstudentsaskeditsreaderswhatlifewouldbelikeintwentyyears,theysaid:machineswouldbe
Hawaii’snativeminorityisdemandingagreaterdegreeofsovereigntyoveritsownaffairs.Butmuchofthearchipelago’spoliti
ACanadianresearcherhasdiscoveredthatsoundtravels【21】______airmorethanone-haftkilometeranhourslowerthanhadbeen
InwhichsituationIndianswouldn’tusesignlanguageaccordingtothepassage?
TheGreek’sloftyattitudetowardscientificresearch--andthescientists’contemptofutility-wasnotalongtimedying.Fora
TheGreek’sloftyattitudetowardscientificresearch--andthescientists’contemptofutility-wasnotalongtimedying.Fora
Inthe18thcentury,NewYorkwassmallerthanPhiladephiaandBoston.TodayitisthelargestcityinAmerica.Howtoexplain
InBritainarrangementsforinvitingandentertainingguestsataweddingareusuallytheresponsibilityofthebride’sfamily.
InBritainarrangementsforinvitingandentertainingguestsataweddingareusuallytheresponsibilityofthebride’sfamily.
Apoliceman
随机试题
动脉粥样硬化纤维斑块中纤维帽的成分包括:
A、咯血伴发热B、咯血伴胸痛C、咯血伴脓痰D、咯血伴皮肤黏膜出血E、咯血伴呛咳肺癌的特点是
法洛四联症的常见并发症为
某家庭购房抵押贷款10万元,贷款年利率为5%,贷款期限为15年,采用按月等额本息还款方式还款。假设该家庭已按月等额偿还了5年。则该家庭的贷款余额为()元。
建设项目管理规划内容涉及的范围和深度,在理论上和工程实践中并没有统一的规定,应视项目的特点而定,一般包括()等内容。
不计人工程项目总价的工程量清单为()。
(2015年)根据反垄断法律制度的规定,下列垄断协议中,由国家工商总局负责执法的有()。
35.【课程名称】复调音乐的大师——巴赫【教学目标】略【教学难点】体验感受巴洛克音乐的风格特征,掌握主调音乐与复调音乐的区别【教学过程】(一)导入:以“穿越”话题,导入音乐的穿越之旅(二)新课教授:主调音
取保候审的保证人必须符合下列条件()。
由于人口增长率超过了劳动力需求增长率,导致劳动人口就业不足,造成大批待业和失业者。对这段话最准确的复述是( )。
最新回复
(
0
)