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
The temperature of the Sun is over 5,000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees
The temperature of the Sun is over 5,000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees
admin
2012-01-16
119
问题
The temperature of the Sun is over 5,000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center. The Sun is so much hotter than the Earth that matter can exist only as a gas, except at the core. In the core of the Sun, the pressures are so great against the gases that, despite the high temperature, there may be a small solid core. However, no one really knows, since the center of the Sun can never be directly observed.
Solar astronomers do know that the Sun is divided into five layers or zones. Starting at the outside and going down into the Sun, the zones are the corona, chromosphere, photosphere, convection zone, and finally the core. The first three zones are regarded as the Sun’s atmosphere. But since the Sun has no solid surface, it is hard to tell where the atmosphere ends and the main body of the Sun begins.
The corona is a brilliant, pearly white, firmly light, about as bright as the full Moon. Its beautiful rays are a sensational sight during an eclipse. The corona’s rays flash out in a brilliant fan that has weak spikelike rays near the Sun’s north and south poles. The corona is thickest at the Sun’s equator.
The corona rays are made up of gases streaming outward at tremendous speed and reaching a temperature of more than 2 million degrees Fahrenheit. The rays of gas thin out as they reach the space around the planets. By the time the Sun’s corona rays reach the Earth, they are weak and invisible.
The paragraphs following the passage most likely discuss which of the following ______.
选项
A、The remaining layers of the Sun.
B、The evolution of the Sun to its present form.
C、The rays from other planets.
D、The other stars in the universe.
答案
A
解析
本题为推理题。文章首先介绍太阳,第二段开始说明太阳的5层结构, 第三第四段都在介绍首层光环的性质特点,很容易理解,后文应该继续 介绍太阳的第二层到第五层的情况。因此[A]选项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/bd5d777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
TheauthorthoughtherChristmaswasunusualbecause______.Whatwasthegirl’sfeelingwhenshefirstreceivedtheunusualmi
Computershavemanyusestoday.Computercansolvedifficultproblemsandcontrolcomplexmachines.Manypeopleusesmallcomput
AsaresultofthePopRevolution,theyoung______.Theunderlinedword"reserved"inthethirdparagraphprobablymeans____
Wheredoestheconversationtakeplace?
In1807NoahWebsterbeganhisgreatestwork,AnAmericanDictionaryoftheEnglishLanguage.Inpreparingthemanuscript(手稿)h
Amyimpressedherteachersbadlybecause______.Itwouldtakepeople______toflyfromLondontoIndia.
Whydoesn’tthewomantakethelastplaneintheevening?
ItiscommonlyacceptedinAmericansocietythattoomuchsleepis______.The"Americansleepdebt"(Line1,Para.3)isther
Twomenweresittinginadoctor’swaitingroom."Whatareyouinhere______?"askedone.
Carsmovedveryslowlyinthe1920s,butthey______movemorequicklythanin1910.
随机试题
丙集团公司(以下简称丙公司)成立于1989年,现总部位于中国上海。20多年来,丙公司从单一的服装业务稳健发展成为集科技、时尚、金融服务、医药等产业于一体的多元化产业集群。该公司追求一种动态的环境,不断探索和发现新产品和市场机会。近年来环境污染问题
程序化决策解决的是以往无先例可循的新问题,通常是有关重大战略问题的决策。()
弥散性血管内凝血(DIC)患者晚期发生广泛出血的主要原因是
若换热器中,一侧流体为冷凝过程(相变),另一侧为单相流体,下列说法正确的是()。
内蒙古包头蓝天电力集团公司委托河北燕山机械设备进出口公司于2011年4月10日以CIF天津USA200000元/台购进荷兰产FW054A型风力发电设备控制器10台。该批设备由中国远洋运输公司载运从天津新港进口。该企业持有效单证向包头海关申请要求将该批设备转
根据税收征收管理法律制度的规定,下列各项中,税务机关可以无限期追征税款和滞纳金的有()。
行政监察监督是()对公安机关及其人民警察执法活动的监督。
1997年美国哪一产业总值最高?( )1997年零售业总值为多少?( )
盲视属于以下哪种现象?()
______drewthedailylifeofupperclasses?______witnessedtheriseofthewomenpaintingschool?
最新回复
(
0
)