高中英语 unit 4 astronomy the science of the stars section warming up readingprereading课件 新人教版必修

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1、SectionⅠWarmingUp&Reading—Prereading答案：A．TheSolarSystemB．TheMilkyWayC．TheBlackHole答案：(1)Pangu(3)GodStepTwo：FastReadingSkimthetextandthenchoosethebestanswer.1.Whatdoesthepassagetellus?A．Theimportanceofwater.B．Howthelifebeganontheearth.C．Howhumanbeingsappeared.D．Howplantsappeared.答案：B2．Ma

2、tchthemainideawitheachparagraph.Paragraph1A．Theimportanceofwaterforlife.Paragraph2B．Awidelyacceptedtheory—theBigBang.Paragraph3C．Theformation(形成)oftheearth.Paragraph4D．Thedevelopmentofplantsandanimalsontheearth.Paragraph5E．Thearrivalofhumansandtheirinfluenceontheearth.答案：Paragraph1—BPar

3、agraph2—CParagraph3—AParagraph4—DParagraph5—EStepThree：CarefulreadingⅠ.Readthetextandthenchoosethebestanswer.1．Whywaslifeabletodevelopontheearthbutnotonotherplanets?A．Theearthhadasolidshape.B．Theearthdidnothaveharmfulgasesinitsatmosphere.C．Thewaterstayedontheearthbutnotonotherplanets.D．

4、Theearthwasneithertoohotnortoocold.答案：C2．Whywasitnecessaryforplantstogrowbeforeanimals?A．Animalsneededplantstoprotectthemfromthesun.B．Plantsprovidedoxygenforanimalstobreathe.C．Animalscouldhidefromhuntersintheforest.D．Itwaseasierforplantstogrow.答案：B3．Whydiddinosaursdisappear65millionyear

5、sago?A．Becausetheearthwastoohotforthemtoliveon.B．Becausetherewasnofoodforthemtoeat.C．Becausetheearthexplodedatthattime.D．Itstillremainsamysteryforus.答案：D4．Whatproblemiscausedbyhumanbeings?A．Theyexisteverywhereontheearth.B．Theycauseglobalwarming.C．Theyfindnewmethodsofgrowingcrops.D．Theye

6、njoyhuntingandfishing.答案：B答案：E→G→B→A→D→F→C答案：没有人确切地知道地球的起源，因为那是很久以前的事了。答案：随后会变成什么没人能知道，直到38亿至45亿年前，这团尘埃才慢慢地形成固态的球体。答案：更重要的是，随着地球的不断冷却，地球表面出现了水。答案：所以，在未来的千百万年中，生命能否在地球上延续下去将取决于这个问题能否得到解决。谢谢观看！