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
When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important sing
When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important sing
admin
2014-08-25
41
问题
When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important single fact about it—at this moment in time. It appears probable, however, that sunlight will be the color we know for only a negligibly (微不足道的) small part of the Sun’s history.
Stars, like individuals, age and change. As we look out into space, we see around us stars at all stages of evolution. There are faint blooded dwarfs so cool that their surface temperature is a mere 4, 000 degrees Fahrenheit; there are scaring ghosts blazing at 100, 000 degrees Fahrenheit and almost too hot to be seen, for the great part of their radiation is in the invisible ultraviolet range. Obviously, the "daylight" produced by any star depends on its temperature; today (and for ages to come) our Sun is at about 10, 000 degrees Fahrenheit, and this means that most of the Sun’s light is concentrated in the yellow band of the spectrum, falling slowly in intensity toward both the longer and shorter light waves.
That yellow "hump" will shift as the Sun evolves. and the light of the day will change accordingly. (80)
It is natural to assume that as the Sun grows older, and uses up its hydrogen fuel—which it is now doing at the spanking rate of half a billion tons a second—it will become steadily colder and redder.
According to the passage, as the Sun continues to age, what color is it likely to become?
选项
A、Yellow.
B、Violet.
C、Red.
D、White.
答案
C
解析
本题属细节判断题。可直接在最后一句找到答案,其句意是“很自然会想到,随着太阳的老化及氢燃料的日益耗用(目前它上面的氢燃料正在以每秒5亿吨的惊人速度燃烧着),太阳将会不断地变冷、变红。”
转载请注明原文地址:https://kaotiyun.com/show/fkxO777K
0
成人本科学位英语
相关试题推荐
这个村庄是以矗立在它前面的那座高山命名的。
Nosoonerhadthewords(beenspoken)(so)he(realized)thathe(shouldhaveremained)silent.
Whatisthemainsubjectofthepassage?Whichofthefollowingisexampleoftelecommutingasdescribedinthepassage?
Ifyourenergycycleislowinthemorningbutyouhaveanimportantjobearlyintheday,risebeforeyourusualhour,andthen
Everycountrytendstoacceptitsownwayoflifeasbeingthenormaloneandtopraiseorcriticizeothersastheyaresimilar
Icaughta______ofthecarbeforeitdisappearedaroundthebend.
Someofthemiddle-agedpeople______tothemeetingwerefamousprofessors.
Mynewglassescostme______thelastpairIbought.
Inthesameway,childrenlearntodoalltheotherthingswithoutbeingtaught-towalk,run,climb,whistle,rideabicycle--co
有人认为男孩子的成绩总是比女孩子好。然而,事实并非如此。
随机试题
开口于上鼻道的是
患者,男,35岁,临床诊断为:男性勃起功能障碍。请药师确认治疗宜选用的药物是
有关避强定位的描述正确的是()。
某分部工程中各项工作间逻辑关系见下表,相应的双代号网络计划如下图所示,图中错误有()。
1949年5月,解放上海的战斗结束,成千上万的解放军指战员整齐地睡在马路上。对此,美国的《生活》杂志称:“这个行动宣告国民党时代已经结束。”这主要是指()。
网上交易平台
设在数据库应用系统设计与实现过程中有下列活动:Ⅰ.数据库逻辑结构设计Ⅱ.数据库事务概要设计Ⅲ.应用程序概要设计Ⅳ.系统总体框架设计上述任务中属于数据库应用系统逻辑设计阶段工作内容的是()。
下面变量定义中错误的是
【61】【63】
Someyearsago,PioneerHi-bredInternational,whereIwasemployed,purchasedNorandCorporation.Pioneer’ssalesrepresentati
最新回复
(
0
)