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
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 o
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 o
admin
2015-01-09
43
问题
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 arnounts 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 andthe 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.
"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 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, kooking 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.
"Earth would put on a little show" means: as it spins,_____.
选项
A、Earth is a more active planet than Venus and Mars
B、Earth reflects a brighter light curve than Venus and Mars
C、Earth shows oceans, deserts, forests and clouds, while Venus and Mars don’t
D、Earth reflects sunlight in an ebb-and-flow manner
答案
D
解析
本题应选D。在第一段第二句中提到“While our neighbors Venus and Mars would reflect a fairlyeven glow,EaCh would put on a little show.”所以答案为D。选项A、B、C均与文意不符。
转载请注明原文地址:https://kaotiyun.com/show/XXLO777K
0
考博英语
相关试题推荐
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
IntheUnitedStatesandinmanyothercountriesaroundtheworld,therearefourmainwaysforpeopletobe【1】aboutdevelopment
IntheUnitedStatesandinmanyothercountriesaroundtheworld,therearefourmainwaysforpeopletobe【1】aboutdevelopment
AnIndiananthropologist,ChandraThapar,madeastudyofforeigncultures,whichhadcustomssimilarto【1】ofhisnativeland.O
Theelectroniccomputeris______someofthetasksthatwereonceaccomplishedbyourownbrains.
Mixingpopulismandcelebrity,Clintondancesintoofficewithaweek-longmultimillion-dollarpartyfullofstars,saxophonem
Writeacompositionofabout200wordsonthefollowingtopic.RemembertowriteyourcompositiononANSWERSHEET2.Topic:
Famedfortheirhigh-elevationforests,theAppalachianMountainssweepsouthfromQuebectoAlabama.HighestinNewEnglandand
She______muchmoreaccurateresponsesnow,hadshetakenmorepainsindevisingthequestions.
随机试题
WhenIgotoheatthemilk,please______thebaby.
Intheyear2000,theworldisgoingtohaveapopulationofabout8billion.Mostscientistsagreethatthemostsevereproblem
患儿,男,13岁。主诉全身皮肤干燥,脱屑,最近出现夜间视物不清,且逐渐加重。可能的原因是
再生障碍性贫血最易与下列哪种病混淆
高速公路的建设可能引发的生态风险主要是()。
监理企业在有条件的情况下,除了强化企业自身管理外,还要注重风险管理,实行监理( )制度,适当转移责任风险。
热力管道有多种形式,下列关于敷设方式的特点,说法正确的有()。
儒家思想是中国传统文化的内核,也是维护君主专制统治的理论基础。但明清之际儒学的文化地位和历史价值在中国走向近代化的历史进程中受到质疑。“质疑”的主要表现在于()。
在菜单定义中,可以在定义菜单名称时为菜单项指定一个访问键。规定了菜单项的访问键为"s"的菜单项名称定义是
Individualsandbusinessescomputetheir______basedontheirrecordedearnings.
最新回复
(
0
)