首页
登录
职称英语
As viewed from space, the Earth’s distinguishing characteristics are its blu
As viewed from space, the Earth’s distinguishing characteristics are its blu
游客
2025-02-02
21
管理
问题
As viewed from space, the Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million km (93 million miles), the Earth is the third planet from the Sun and the fifth largest planet in the solar system. Its rapid and molten nickel-iron core give rise to an extensive magnetic field which, coupled with the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Most meteors burn up in the Earth’s atmosphere before they can strike the surface. The planet’s active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it was formed. The Earth has a single natural satellite-the Moon. [br] Which of the following helps to create the Earth’s magnetic fields?
选项
A、Its blue waters.
B、Its nitrogen atmosphere.
C、Its molten metal core.
D、The Moon.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3940072.html
相关试题推荐
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
随机试题
DothefollowingstatementsagreewiththeinformationgiveninReadingPassage
[originaltext]W:IknowyourcompanywasoneofthebiggestAmericancorporatio
NotSeeingtheForestfortheDollarBillsA)TheU.S.Fisha
Earthquakesoftenhappennearvolcanoes,butthisisnotalwaystrue.Thece
TrustMe,IAmaRobotRobotsafety:asrobots
采用“利用系数法”计算照度时,下列哪项与照度计算无直接关系?()A.灯的数量
()是确定两种或两种以上变数间相互依赖的定量关系的一种统计分析方法。A、趋势分
可以作为判断货币政策力度和效果的重要指示变量的货币政策目标是( )。A.最终目
由于认识到学习的重要意义而努力学习的动机是( )A.外在动机 B.内在动机
最常用的并购方式是()。A.用现金购买资产 B.用股票交换股票 C.用
最新回复
(
0
)