Scientists believe that 4.5 billion years ago, Mars and Earth began their existence undersimilar conditions. During the first billion years,liquid water—in contrast to ice-was abundant onthe surface of Mars. This is an indication that Mars was much warmer during that time. Mars alsohad a thic...
解析:题干大意:科学家估计,地壳在30亿年前就开始变化。文章第三段第二句提到:They’ve found new evidence suggesting that Earth’s crust started shifting atleast 3.8 billion years ago.他们发现新证据——地壳至少在38亿年前就开始变化。题干所述把文章信息的年份缩短了,故答案选B。反馈 收藏 ...
Since it formed over 4.5 billion years ago, Earth has been hit more people to die of 66.n(starve).61.(occasional) by asteroids (小行星) and comets 62.The new awareness of asteroid impacts has increased the appreciation of orbits bring them into the inner solar system. These objects, ...
百度试题 结果1 题目1. Billions (billion) of years ago, there were many kinds of animals on the earth. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Ever since Earth formed roughly 4.5 billion years ago, its climate has gone through a number ofincredible changes.All you have to do is look at images of the Jurassic Period (侏罗纪时期) to know that at one time,much of our planet was covered in extremely hot and humid jungle. Skip ahea...
We believed the Earth is about 4.5 billion years of age, of life on Earth is about 3.5 billion years ago. believed to be ( ) 翻译结果5复制译文编辑译文朗读译文返回顶部 Our Earth has the probably 4,500,000,000 years age, on Earth's life according to what is believed is according to ...
Our planet is believed to have about 4.5 billion years of age, life on Earth is believed to about 3.5 billion years ago, began to emerge 翻译结果2复制译文编辑译文朗读译文返回顶部 正在翻译,请等待... 翻译结果3复制译文编辑译文朗读译文返回顶部 ...
EversinceEarthformedroughly4.5billionyearsago,itsclimatehasgonethroughanumberofincrediblechanges.AllyouhavetodoislookatimagesoftheJurassicPeriod(侏罗纪时期)toknowthatatonetime,muchofourplanetwascoveredinextremelyhotandhumidjungle.Skipaheadacouplemillionyearsandyougettoaniceageevent,whenglobaltemperatureexperiencedahuge...
Between 4.5 and 3.8 billion years ago, the earth became so ___ that it was not clear whether the shape would last or not. A. genuine B. slight C. solid D. violent 相关知识点: 试题来源: 解析 D 考查词义辨析,genuine真心的,slight轻轻的,solid 坚固的,violent猛烈地,句意:在4.5到3.8亿...
阅读理解 Ever since Earth formed roughly 4.5 billion years ago, its climate has gone through a number of incredible changes.All you have to do is look at images of the Jurassic Period(侏罗纪时期) to know that at one time, much of our planet was covered in extremely hot and humid jungle...