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
考研
The temperature of the sun is over 5, 000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degree
The temperature of the sun is over 5, 000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degree
admin
2017-11-28
32
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 sun’s outermost layer begins about 10, 000 miles above the visible surface and goes outward for millions of miles. This is the only part of the sun that can be seen during an eclipse such as the one in February 1979. At any other time, the corona can be seen only when special instruments are used on cameras and telescopes to shut out the glare of the sun’s rays.
The corona is a brilliant, pearly white, filmy 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 wispy 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 speeds 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.
Matter on the sun can exist only in the form of gas because of the sun’s______.
选项
A、size
B、age
C、location
D、temperature
答案
D
解析
事实细节题。根据题干中的Matter和gas将本题出处定位于文章第一段第二句。该句提到,太阳比地球炎热得多,因而除了太阳核心,物质只能以气体的形式存在。由此可知,太阳上的物质以气体的形式存在是由于太阳的温度,故答案为[D]项。
转载请注明原文地址:https://kaotiyun.com/show/NYua777K
本试题收录于:
翻译硕士(翻译硕士英语)题库专业硕士分类
0
翻译硕士(翻译硕士英语)
专业硕士
相关试题推荐
OfallthecatastrophesthatcouldbefallAmericaincomingyears,abigterroristattack,perhapsevenbiggerthanthoseonSep
Generouspublicfundingofbasicsciencewould______considerablebenefitsforthecountry’shealth,wealthandsecurity.
Ihadneverseensomanypeoplewithsomanydisabilities.Ireturnedhome,silently______.thinkinghowfortunatewereallywe
Fewofustakethepainstostudyourcherishedconvictions;indeed,wealmosthaveanatural______doingso.
AlthoughSimpsonwasingeniousat______toappearinnovativeandspontaneous,beneaththeruseheremaineduninspiredandrigid
Mystudentsfoundthebook______;itprovidedthemwithanabundanceofinformationonthesubject.
Workersinthiscountryaregettinghigherwageswhileturningoutpoorproductsthatdonot______thetestofinternationalco
BecausemodernscientistsfindtheancientGreekviewofthecosmosoutdatedandirrelevant,theynowperceiveitasonlyof___
Ourresultswereinconsistent.Theprogramobviouslycontainsanerror.Arevisionoftheprogramisrequired.
Thepoliceinspector,havingreceivednewinformationfromaconfidentialsource,decidedtoenlargethe________ofhisinquiry.
随机试题
含铁量最低的食物是
鞍区CT扫描技术不包括
治疗1型糖尿病降血糖药物应选择
A.奥美拉唑B.西米替丁C.硫糖铝D.哌仑西平E.氢氧化铝中和胃酸而降低胃内酸度
女性,30岁,乏力、活动性心慌1年余。查体眼结膜、口唇苍白,心率110/min,心尖区可闻及Ⅱ级收缩期杂音,化验检查:血红蛋白60g/L,平均红细胞血红蛋白浓度0.25g/dl,平均红细胞体积70fl。血清铁6.2μmol/L,血清转铁蛋白饱和度10%
对以下文段的排序,最合理的是()。①“发思古之幽情”,不仅使人伤感于昔日的兴衰往事,还能使人们从中汲取教益,陶冶性情,抒发情怀②多少诗人词家为之讴歌咏唱,留下了动人的诗篇,更增添了古迹的光彩③古往今来,不知拨动了多少人的心弦,引发了多
根据以下图表,回答下列问题。世界货物贸易进出口总额差距最大的年度,在下列选项中,货物进口额增长速度(与上年比)排名第二的是()。
左边给定的平面图折叠后的立体图形,不可能的是:
影响和控制别人的一种愿望或驱动力是指()
微分方程y’’一λ2y=eλx+e-λx(λ>0)的特解形式为()
最新回复
(
0
)