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
72
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.
Why are very hot stars referred to as "ghosts"?
选项
A、They are short-lived.
B、They are mysterious.
C、They are frightening.
D、They are nearly invisible.
答案
D
解析
本题属细节判断题。在第二段的第二句讲到:有令人恐怖的幽灵星球的温度高达100000华氏度,几乎热得让人看不见;称呼这些星球为幽灵是因为它们难以见到,与人们想象中的不可见的鬼有相似之处。too…to是表否定的句型,与D项中的invisible“看不见”意思是一致的,故选D。
转载请注明原文地址:https://kaotiyun.com/show/QxJO777K
0
成人本科学位英语
相关试题推荐
______isgenerallyaccepted,economicalgrowthisdeterminedbythesmoothdevelopmentofproduction.
Cityplannersmustneverforgetthatpublicacceptanceoftheirideasrequirestime.Sowhentheirideasare______theymustco
Oneofthemostimportantsocialdevelopmentsthathelpedtomakepossibleashiftinthinkingabouttheroleofpubliceducatio
Oneofthemostimportantsocialdevelopmentsthathelpedtomakepossibleashiftinthinkingabouttheroleofpubliceducatio
Oneofthemostimportantsocialdevelopmentsthathelpedtomakepossibleashiftinthinkingabouttheroleofpubliceducatio
Whethertheeyesare"thewindowsofthesoul"isdebatable!thattheyareintenselyimportantininterpersonalcommunicationis
Anallowance(零花钱)isanimportanttoolforteachingkidshowtobudget,saveandmaketheirowndecisions.Childrenrememberan
Anallowance(零花钱)isanimportanttoolforteachingkidshowtobudget,saveandmaketheirowndecisions.Childrenrememberan
随机试题
ResearchershavefoundthatREM(rapideyemovement)sleepisimportanttohumanbeings.Thistypeofsleepgenerallyoccursfour
出生后人体最主要的造血组织是
男,7个月,用力哭时,常发生气短,诊断为过度肥胖。不属于肥胖症的治疗原则的是()
将带有租赁契约的土地进行转让、收回、征收或调整租金时,一般要进行()评估。
在计算资产的流动性时,()的资产均要从各类流动性资产中扣除。
2010年我国在线教育市场规模为491.1亿元,到2015年在线教育市场突破千亿元大关达1171亿元。与热闹的市场相对的是,行业整体面临较大的盈利困难。截至2015年年底,我国约有9500家从事互联网教育的公司,经过对其中400家在线教育平台调查发现.
根据下面材料回答问题。2006年2月份,居民消费价格总水平比2005年2月上涨2.7%,其中城市上涨2.5%,农村上涨3.2%:食品价格上涨6.0%,非食品价格上涨1.0%;消费品价格上涨3.0%,服务项目价格上涨1.8%。从月份比较,居民消费价
按表意功能,镜头剪辑一般分为叙事剪辑与()两大类。
软件工程的理论和技术性研究的内容主要包括软件开发技术和()。
汉字(Chinesecharacter)是世界上最古老的文字之一,其历史可以追溯到5000年前。
最新回复
(
0
)