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
2011-01-14
65
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 radia-tion 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 de-grees 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.
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 sec-ond-it will become steadily colder and redder.
What does the author say is especially important about the Sun at the present time?
选项
A、It appears yellow.
B、It always remains the same.
C、It had a short history.
D、It is too cold.
答案
A
解析
本题属细节判断题。根据题目中的important about the Sun at the present time找到短文的对应处,即第一段的开头When we accept the evidence of our un-aided 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.可从这句话得知,作者认为我们肉眼见到的是黄色星球——太阳这一现象在当前来讲是极为重要的。
转载请注明原文地址:https://kaotiyun.com/show/LxJO777K
0
成人本科学位英语
相关试题推荐
______isgenerallyaccepted,economicalgrowthisdeterminedbythesmoothdevelopmentofproduction.
______yourpoorrecordinschool,wethinkyoushouldstudyharder.
Man:Ifyouaren’tdoinganythingparticular,shallweseethenewplayattheGrandTheatertonight?Woman:Soundsgreat.ButI
Theideaofbuilding"NewTowns"toabsorbgrowthisfrequentlyconsideredacure-allforurbanproblems.Itiswronglyassumed
ItwasrecentlyreportedthataJapanesebankerwhohadbeeninseriousfinancialtrouble______suicideinamomentofwilddesp
Idon’tsupposeyouareserious,______?
Firstofcourse,itisplainthatintheyear2010everyonewillhaveathiselbowseveraltimesmoremechanicalenergythanhe
Pricesoffoodandclothingandalmosteverythingelseinthecountryhavesteadilygoneup.Asaresult,thebuying______ofthe
(Noneofus)had(thefinalsay)inthismatter,and(therefore)itwasrecommendedthatwe(waited)fortheauthorities.
全球化也正在改变人们的生活方式。
随机试题
和某有一对宋代汝窑青釉三足瓷笔洗,堪称笔洗中的传世佳作,估价在每只笔洗1000万元人民币左右。纪某是著名的瓷器收藏家,一直希望能够将该笔洗收入自己的藏品之中。请根据题设,回答问题。设和某因车祸不幸身亡,其子和二继承了该对笔洗,纪某上门提出以1
下列青霉素中,因其耐酸而可口服的是
病人,女性,40岁,心脏病,上二层楼时感心悸、气促,休息10分钟左右可好转。对病人活动量的限定是
下列文件不属于项目成本控制依据的是()
以下属于建造师不予注册情形的是()。
甲上市公司(以下简称甲公司)经批准于2017年1月1日以50400万元的价格(不考虑相关税费)发行面值总额为50000万元的可转换公司债券。该可转换公司债券期限为5年,票面年利率为3%,实际年利率为4%。自2018年起,每年1月1日支付上年度利息。自20
福耀集团是一家专业生产汽车安全玻璃的中外合资企业,是我国国内生产规模最大、技术水平最高、出口量最大的汽车玻璃生产供应商,1987年成立于福建省福州市,并迅速发展成为全球最大的汽车安全玻璃生产基地。2014年,福耀集团继在俄罗斯建设第一个工厂后,又在美国俄亥
领导用人就是指用干部。()
根据我国《宪法》和法律,下列有关国家机构职权的表述中哪些是错误的?
NarratorListentopartofaconversationbetweenastudentandaprofessor.Nowgetreadytoanswerthequestions.You
最新回复
(
0
)