1、Unit 4 Astronomy:the science of the starsSection I Warming Up&Reading基 础 巩 固 能 力 提 升 语 篇 理 解 基 础 巩 固.单词拼写1_ n天文学2_ n系统；体系；制度3_ n学说；理论4_ n原子5_ n球体；地球仪；地球6_ n大气层；气氛7_ adj.基本的；基础的astronomy system theory atom globe atmosphere fundamental 8_ vi.&vt.乘；增加9_ n氧10_ n谜；难题 vt.&vi.(使)迷惑；(使)为难11_ prep.与不同；不像12_
2、adj.猛烈的；激烈的；强暴的13_ adj.有害的14_ vi.存在；生存multiply oxygen puzzle unlike violent harmful exist.短语拼写1_ 太阳系2_及时；终于3_冷却下来；变凉4_对(来说)是基本的5_下蛋6_产生；分娩7_到某人；接着8_阻止；制止solar system in time cool down be fundamental to lay eggs give birth to in ones turn prevent.from.完成句子1what 引导主语从句_(随 后 它 变 成 什 么)was uncertain unt
3、il between 4.5 and 3.8 billion years ago.2so.that.“如此以至于”，引导结果状语从句The earth became _(如此激烈动荡以至于)it was not clear whether the shape would last or not.What it was to become so violent that 3“make宾语宾语补足语”复合结构This produced a chain reaction,which _(使生命的发展成为可能).4whether 引导主语从句和宾语从句So _(生命能否在地球上延续)for milli
4、ons of years to come will depend on _(这个问题能否得到解决)made it possible forlife to develop whether life will continue on the earth whether thisproblem can be solved 语 篇 理 解.Read the text and match the main idea of the paragraphs.1Paragraph 1 AHow humans appeared and what effects they had on the earth.2Par
5、agraph 2 BWater is very important to life on the earth.3Paragraph 3 CHow the earth formed.4Paragraph 4 DHow the plants and animalson the earth developed.5Paragraph 5 EIt is widely accepted that the universe began with a“Big Bang”答案：15 ECBDA.Read the text carefully and choose the best answer accordin
6、g to the text.1This passage is mainly about.Athe earths atmosphereBthe solar systemCthe development of lifeDthe difference between the earth and other planets2What happened shortly after the“Big Bang”？AThe earth was just a cloud of energetic dust.BThe earth became a solid ball quickly.CThe earths at
7、mosphere appeared.DWater stayed on the moon.3What makes the earth different from other planets?AIts quite warm on the earth.BThere is plenty of atmosphere.CSmall plants growing on the surface of the water appeared.DThe first oceans and seas were filled with oxygen.4When，reptiles appeared.Athe first
8、green plants began to appear on landBland animals appearedCthe plants grew into forestsDearly shellfish developed答案：14 CACC.Analyze the following difficult sentences in the text.1No one knows exactly how the earth began,as it happened so long ago.句式分析尝试翻译 _。没有人确切知道地球是怎样开始的，因为它发生在很久以前2What it was to
9、become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.句式分析尝试翻译 _。随后它变成什么没人确定，直到 4538 亿年前，这团尘埃才慢慢地形成了一个固态的球体3What is even more important is that as the earth cooled down,water began to appear on its surface.句式分析这是一个复合句。what 引导主语从句；that 引导表语从句；as 在表语从句中引导状语从句。尝试翻译 _。更重要的是，随着地球的不断冷却，地球表面出现了水4So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.句式分析尝试翻译 _。所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决能 力 提 升点 击 进 入