31. He is trying to explain how ___ began on the earth.A. life B.lives C. the life D. a life 答案 A 结果三 题目 31. He is trying to explain how ___ began on the earth.A. life B.lives C. the life D. a life 答案 A 结果四 题目 He is trying to explain how ___...
It is still a mystery ___ life began on earth. A. how B. when C. why D. what 相关知识点: 试题来源: 解析 A。本题考查主语从句。根据句意“地球上的生命是如何开始的仍然是个谜”,“如何”用 how 引导主语从句。when 表示时间;why 表示原因;what 在主语从句中要充当成分,不符合题意。反...
解析 A。解析:这句话的意思是“地球上的生命是如何开始的仍然是一个谜”。“life began on earth”不缺主语、宾语等成分,表达的是方式的疑问,所以用 how 引导主语从句。B 选项 what 在名词性从句中需充当成分;C 选项 that 在主语从句中无实际意义,但不符合语境;D 选项 when 表示时间,不符合语境。
百度试题 结果1 题目 (1. How long has life been on the earth?A. Hundreds of years.B. Millions of years C. Hundreds of millions of years D. Thousands of years 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
People have always___ exactly how life on earth began. 2人们一直对于生命是如何在地球上开始的感到好奇.People have always exactly how life on earth began. 3人们一直对于生命是如何在地球上开始的感到好奇.People have always___ exactly how life on earth began. 4【题目...
百度试题 结果1 题目How life began on earth is a ___that scientists found hard to solve. A. discovery B. system C. belief D. puzzle 相关知识点: 试题来源: 解析 D 反馈 收藏
3Para.4Para.5 Thearrivalofhumansandtheirimpact（影响）ontheearth Theformation(形成)ofatmosphereandwateronearth Atheoryabouthowtheuniversebegan Task3Carefulreading Para.1 JudgeTrueorFalse Tobehonest,noneofusknowshowtheearthbeganbecauseithappenedtoolongago.True Para.1 HowdidtheBigBangcreatetheuniverse?
试题来源: 解析 答案:A. curious“好奇的”;excited“兴奋的”;anxious“担忧的,焦虑的”;careful“小心的”.根据句意,人们对生命的起源是感到“好奇”.be curious about“对…好奇”故选A. 句意:人们对地球上生命是如何起源的感到很好奇. 反馈 收藏 ...
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory,the universe began with a “Big Bang” that threw matter in all directions. After that,atoms began to form and combine to create stars and other bodies.For ...
1___life began on the earth is one of the biggest puzzles to scientists. A. How B. What C. Where D. That 2___life began on the earth is one of the biggest puzzles to scientists. A. How B. What C. Where D. That 3___ life began on the earth is one of the biggest puz...