首页
登录
职称英语
There are some objects in the sky that move so quickly that sometimes you on
There are some objects in the sky that move so quickly that sometimes you on
游客
2025-07-20
18
管理
问题
There are some objects in the sky that move so quickly that sometimes you only see them out of the corner of your eye. These are some of the huge number of bits of rock and dust that are floating around in space, called meteoroids. Normally, we cannot see them at all, but if they travel too close to the Earth, they get caught by the pull of the Earth, and begin to fall towards us. They fall faster and faster, until they hit our atmosphere(大气层), by which time they are going so fast that they begin to burn up, and all that you see is a flash of light that moves very quickly across the sky and disappears. These shooting stars, or meteors as they are properly called, are quite common, and sometimes you may see several in a night.
Most meteoroids are very small bits indeed, and they burn up long before they get to the Earth. However, a very few do manage to get all the way through the atmosphere, and actually fall to the ground. Usually they do not do much damage, although this is not always the case.
Meteoroids that actually manage to reach the Earth are called
meteorites
. Most countries have places where meteorites have struck the Earth. Some of these places are very large indeed and are tourist attractions. [br] Why do some objects from outer space fall to the ground?
选项
A、They are too big.
B、They are hit by huge rocks.
C、They move too fast.
D、They are pulled by the Earth.
答案
D
解析
细节题。题干意为“为什么外太空的一些物体会掉落到地面?”根据文章第一段第三句“Normally,we cannot see them atall,but if they travel too close to the Earth,they get caught by thepull of the Earth,and begin to fall towards us.”可知,作者认为通常我们根本看不见它们,但是如果它们太靠近地球,它们就会被地球引力吸住,开始向我们掉落,故D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4168814.html
相关试题推荐
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
Sometimeshewouldmakehimself______inthekitchenbycleaningandtidying.A、be
ReadingAloudChildrenlearnquickly.Researchs
ReadingAloudChildrenlearnquickly.Researchs
ReadingAloudChildrenlearnquickly.Researchs
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
Therearesomeobjectsintheskythatmovesoquicklythatsometimesyouon
随机试题
Myhairdryer’sstoppedworking—Ithinkthe______hasblown.A、plugB、fuseC、wire
投资者希望能在两种股票A和B上都得到10%的回报率,股票A预计将在来年分派0.3
关于联合体共同承包的说法,正确的是。A.联合体各方对承包合同履行各自承担相应的责
下列说法错误的是( )。A.经营机构应当建立合理的发布证券研究报告的相关人员绩
正常足月新生儿只要情况稳定,呼吸通畅,生后开始尝试喂奶的时间是A.半小时 B.
下列各项中,可用作效益审计评价标准的有()A.国家有关政策 B.具体行业标
水痘的传染期是A.发热至出疹期为止 B.潜伏期至出疹期为止 C.潜伏期至皮疹
在()中,进行卖出套期保值交易,可使保值者实现净盈利。A.正向市场中,基差走强
以下可以销售的医疗器械是A.包装上舍有宣传“保证治愈”字样的 B.说明书上标注
根据《建设工程质量管理条例》,工程监理单位的质量责任和义务有( )。A.依法取
最新回复
(
0
)