高中英语人教版 (新课标)必修3&4Unit 4 Body language示范课课件ppt
展开第一学时 Reading and Cmprehensin
快速阅读课文“Hw life began n the earth”，以约30词写出文章的段落大意。温馨提示：本文是科普文，属于说明文的范畴，写摘要时要抓住文章要说明的主要问题：地球上生命起源的几个主要阶段。
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答案：The passage explains hw life began n the earth.After the earth explded and prduced water whse cntinued presence made it pssible fr life t develp, plants and animals including human beings appeared n the earth.
根据课文“Hw life began n the earth”，选择正确答案。1．Frm Paragraph 1 we can knw that stars are created frm________．A．air B．atms C．rcks D．ice
2．What des the wrd “they” refer t in the sentences “It explded ludly with fire and rck.They were in time t prduce carbn, nitrgen，water vapur and...” in Paragraph 2?A．Planets. B．Stars.C．Gases. D．Fire and rck.
3．Which is the right rder f the develpment f life?A．Small clever animals—shellfish—dinsaurs—mammals.B．Shellfish—dinsaurs—small clever animals—mammals.
C．Shellfish—dinsaurs—mammals—small clever animals.D．Dinsaurs—shellfish—mammals—small clever animals.
4．Why were mammals different frm ther life frms?A．They gave birth t yung baby animals and prduced milk t feed them.B．They prduced yung generally by laying eggs.C．They were able t live n land as well as in the water.D．They live n grass.
5．What prblem is caused by human beings? A．They exist everywhere n the earth.B．They cause glbal warming.C．They find new methds f grwing crps. D．They enjy hunting and fishing.
InsectsAmphibiansReptilesDinsaursMammals including3．________
Land animals
human beings
根据课文“Hw life began n the earth”，在下文空格中填上恰当的词语，使文章连贯完整。N ne knws exactly 1.________the earth began.Accrding t a widely accepted thery, the earth began with a “Big Bang”，2.________explded ludly and prduced water vapur and manygases，3.________(make) the earth's atmsphere.As the earth cled dwn, water appeared and stayed 4.________the surface.It was the
presence f water 5.________allwed the earth t disslve harmful gases and acids int the ceans and seas, which made 6.________pssible fr life t develp.First, the appearance f small plants encuraged the develpment f early shellfish and all srts f fish.Next, green plants began t grw n fllwed by land animals.S reptiles appeared fr the first time.Later, dinsaurs ， they suddenly disappeared.After that, mammals came int
being.Finally, humans appeared and spread all ver the earth.Hwever, they are putting t much carbn dixide int the atmsphere, making the earth t ht 9.________(live) n.S whether life will cntinue n the earth will depend n 10.________this prblem can be slved.
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