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
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light
admin
2005-12-10
37
问题
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light of our sun. While our neighbors Venus and Mars would reflect a fairly even glow. Earth would put on a little show. Earth’s light would brighten and dim as it spins, because oceans, deserts, forests and clouds which are all too small to be seen from such a distance, reflect varying amounts of sunlight. The variations, it turns out, are so strong and distinctive that surprising amount of information could be taken from a simple ebb and flow of light. Scientists at Princeton University and the Institute for Advanced Study conducted a detailed study of Earth’s reflections as a way for human scientists to learn about distant planets that may be like our own.
(2) "If you looked at our solar system from far away, and you looked at the terrestrial planets Mercury, Venus, Earth and Mars, one of the quickest ways to see that Earth is unique, which is by looking at the light curve," said Ed Turner, professor of astrophysics and a co-author of the study. "Earth has by far the most complicated light curve." The standard thinking in the field had been that most of the information about an Earth-like planet would come from spectral analysis, a static reading of the relative component of different colors within the light, rather than a reading of changes over time. Spectral analysis would reveal the presence of gases such as water vapor, carbon dioxide and oxygen, in the planet’s atmosphere. Looking at the change in light over time does not replace spectral analysis, but it could greatly increase the amount of information scientists could learn, said Turner. It may indicate, for example, the presence of weather, oceans, ice or even plant life.
Which of the following statements is TRUE?
选项
A、Scientists at the Princeton University want to find that distant planets are like our Earth.
B、Among all the terrestrial planets Earth’s light curve is the most complicated.
C、Spectral study of the light will see no development of itself because it is static.
D、Spectral reading is used as a supplementary method to the study of the change in light over time.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/nHIO777K
0
考博英语
相关试题推荐
ReadthemagazinearticlebelowaboutAndySeymour,theChiefExecutiveofachainofbookstorescalledBookroom,andthequest
Readthearticlebelowaboutthedifferencesbetweenchiefexecutivesandentrepreneurs.Choosethebestsentencefromtheo
•LookatthenotesaboutanAmericanbusinessmancalmedMatthewWebb,whoisworkingintheUKforacompanycalledElectra.•So
Youwillhearaninterview.TheintervieweristalkingtoabusinesspersonTomSzaky,whorunsanenvironment-friendlycompany,
MakingUseoftheTradeShowProblems:No.1Howtogettherightpeopletocommunicatewiththe【16】No.2Howtofi
Withnewtechnology,youdon’tneedtobeattheofficetodoyourjob.21thcentryisacentryoftelecommuting.
WorriedSpanishlemongrowershave(29)upaspecialcommissiontotryto(30)theproblemsofadecliningmarketandcompet
(1)Viewedfromastarinsomeothercornerofthegalaxy,Earthwouldbeaspeck,afaintbluedothiddenintheblazinglight
Althoughvocalcordsarelackingincetaceans,phonationisundoubtedlycenteredinthelarynx.Thetoothedwhalesorodonto
Althoughvocalcordsarelackingincetaceans,phonationisundoubtedlycenteredinthelarynx.Thetoothedwhalesorodonto
随机试题
炮制后毒性降低,常用于鼻渊头痛、风湿痹痛的中药是
Mancannotlivewithout______.
国际工程投标报价时,可根据招标项目的不同特点采用不同的报价。报价可适当低一些的工程特点是()。
采用公允价值模式对投资性房地产进行后续计量的企业,有证据表明,若企业首次取得某项投资性房地产时,其公允价值不能持续可靠取得,为了保证所有投资性房地产均采用公允价值模式计量,则企业不得取得该项投资性房地产。()
道教对男性道徒可称道士、道人、道长、乾道或尊称为天师、炼师;女性可称为道姑、女冠、坤道等。道观负责人可称监院、住持或当家师父等。信教但不出家的亦可称为居士、信士。()
社会工作者小张最近刚刚晋升为某社会工作服务机构主管,拟采用民主型领导方式管理员工。小张的下列做法中,符合该领导方式的是()。
由于近期的干旱和高温,导致海湾盐度增加,引起了许多鱼的死亡。虾虽然可以适应高盐度,但盐度高也给养虾场带来了不幸。以下哪项如果为真,能够提供解释以上现象的原因?
计算I=其中D由x=一2,y=2,x轴及曲线x=围成.
FocusonpreventingdiseaseAswehaveseen,thefocusofmedicalcareinoursocietyhasbeenshiftingfromcuringdisease
(就经济状况而言)______________,heisnotrich.
最新回复
(
0
)