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
2024-01-01
34
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] What two factors help protect the Earth from radiation?
选项
A、Magnetic field and atmosphere
B、Rapid spin and molten iron-nickel core
C、The Sun and the Moon
D、Blue waters and white clouds
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3325513.html
相关试题推荐
Theflavorofcoffeewill______onthecharacteristicsofthebean.A、dependB、dep
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
随机试题
Questions1-7LookatthefollowinglistofpeopleA-Eandthelistofstatement
Gointoanyaverageprovincialtownandthelastthingyouwillfindisade
C
相对强度身体活动时的衡量指标包括()A.最大心率的百分比 B.最大耗氧量
下列哪些功能属于健康管理师三级的职业功能()A.健康风险评估和分析 B
在下列定额中,以工序为研究对象的是( )。A.施工定额 B.概算定额 C.
下列属于个人住房贷款贷后管理风险的有( )。A.逾期贷款催收不及时,不良贷款处
当数据为偏态分布,特别是偏斜程度较大时,平均数的代表性比中位数和众数好。()
2006年我国颁布的《国家中长期科学和技术发展规划纲要(2006—2020年)》
关于劳动合同试用期的说法正确的有( )。A.同一用人单位与同一劳动者只能约定1
最新回复
(
0
)