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
6
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://www.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
EdwardandRobertHarmerwerebothborninthehouseonCranberryLane.Them
以下几种人工合成纤维中,阻燃性和防霉防蛀性能俱佳的是( )。A.丙纶 B.腈
女,24岁,停经6周,尿HCG(+),诊断为早孕。因高热1周曾服多种药物,为优生
LED可变信息标志按用途可分为文字和图形两种。()
可用于评价项目财务盈利能力的绝对指标是()。A、价格临界点 B、财务净现值
在片剂的薄膜包衣液中加入液状石蜡的作用为A、致孔剂 B、助悬剂 C、乳化剂
2010年1月,模特翟凌(网名兽兽)与其前男友性爱视频被散布在网上,引起百万次下
小张去车站接一位陌生客人,他的预期会影响对这位客人的辨认。这神知觉的加工方式主要
男,45岁。进行性呼吸困难半年。无咳嗽,咯血及胸痛。查体,BP110/75mm
甲施工企业承建的办公楼项目已经交付使用,发包人仍拖欠部分工程款未予支付。甲在
最新回复
(
0
)