首页
登录
职称英语
When we accept the evidence of our unaided eyes and describe the Sun as a ye
When we accept the evidence of our unaided eyes and describe the Sun as a ye
游客
2024-01-19
46
管理
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.
[br] 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://tihaiku.com/zcyy/3375444.html
相关试题推荐
BritishpsychologistshavefoundevidenceofalinkbetweenexcessiveIntern
BritishpsychologistshavefoundevidenceofalinkbetweenexcessiveIntern
BritishpsychologistshavefoundevidenceofalinkbetweenexcessiveIntern
BritishpsychologistshavefoundevidenceofalinkbetweenexcessiveIntern
Sugarshocked.ThatdescribesthereactionofmanyAmericansthisweekfollo
Sugarshocked.ThatdescribesthereactionofmanyAmericansthisweekfollo
Mountingevidenceshowsthatbehavioral-activation(BA)therapyisjustas
Mountingevidenceshowsthatbehavioral-activation(BA)therapyisjustas
Mountingevidenceshowsthatbehavioral-activation(BA)therapyisjustas
Mountingevidenceshowsthatbehavioral-activation(BA)therapyisjustas
随机试题
IrememberatripIoncemadetomygrandmother’shouse.Shelivedatab
Bytheendoflastmonth,ourfactory(produce)______3000motors.hadproduced到
Completetheflow-chartbelow.ChooseSIXanswersfromtheboxandwritethecor
【B1】[br]【B4】[audioFiles]audio_eusm_j01_056(20099)[/audioFiles]motive由空格处所在的句子
B
两个口号论争中的两个文学口号指的是()A.“国防文学”和“大众文学” B.“国
对某构件采用回弹法检测混凝土抗压强度,如测区数少于10个,该构件的混凝土强度推定
根据《期货交易管理条例》规定,会计师事务所、律师事务所未勤勉尽责,所出具的文件有
某国有企业扩建项目,招标采购进口风力发电设备。按照正常程序开标、唱标,投标人确认
2×21年10月8日,甲公司竞标一项厂房建造项目,发生投标费10万元(投标费由甲
最新回复
(
0
)