还剩1页未读,继续阅读
文本内容:
2019-2020年高中英语《Unit4Astronomythescienceofthestars》reading学案
(2)新人教版必修3Step
1.Scanning
1.matchthemainideawitheachparagraph.Para.1formation形成oftheearth.Para.2Theimportanceofwaterforlife.Para.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.
2.Dividethetextinto2partsStage1:Thedevelopmentoftheearthpara___—___Stage2:Thedevelopmentoflifepara___—___Step
2.Carefullyreading
1.Finishthefollowingtasks.Stage1:Thedevelopmentoftheearth1AftertheBigBangwhatwastheearthlikeIt’sstilljust________________.Thedustsettledintoa___________.2WhathappenednextIt________withfireandrockandproduced__________________________andother______.3Whatdidthewatervapourandgasesform______________________.4Whatappearedastheearthcooleddown_______appearedWhyiswatersoimportantforthebeginningoflife__________________________________________________________________________________________________________________________________________Stage2Thedevelopmentoflife1Whatlifedevelopedafterwaterappeared___________appearsinwater2Whatlifedevelopedinwaternext_________andallsortsof___3Whataboutthelifeonland_______and__________appeared
4.WhatlifedevelopednextonlandTheplantsgrewinto_____________appearedand_________developed.
②AretheytakingcareoftheearthwellWhy__________________________________________________________________________________________________________________________________________
2.Canyouputtheorderofdevelopmentoflifeintoatimeline1Insectsandamphibiansappeared.2Dinosaursappeared.3Theearthbecameasolidball.4Smallplantsgrewonthewater.5Reptilesappeared.6Plantsbegantogrowondryland.7Theearthwasacloudofdust8Waterappearedontheearth9Shellfishandotherfishappeared.10Theuniversebeganwitha“BigBang”.11Cleveranimalswithhandsandfeetappeared12Mammalsappeared.
3.Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandbinetocreatestarsandotherbodies.Between
4.5and
3.8billionyearsago●Dustsettledintoasolidand______globe.●Theearthexplodedtoproduceits___________.●Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.Manymillionsofyearslater●Thefirstsmallplantsonthesurfaceofthewaterproduced_______.●Early_______andallsortsoffishappeared.●Greenplantsbegantogrowonland.●Insectsand___________appeared.Manymillionsofyearslater●________appearedandtheylaideggs.●Dinosaursdevelopedlaideggsand_______formorethan140millionyears.●Mammalsroseand____________babies.About
2.6millionyearsago●Somesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______makingtheearthtoohot.
4.TrueTorFalseF.1TheearthappearedbeforetheBigBanghappened.2Theoriginalatmosphereconsistedofnitrogenandoxygen.3Oxygenwasimportanttothedevelopmentoffish4Lifebeganinwaterandthenonland.5Thedisappearanceofdinosaursmadethepossibletheriseofmammalsontheearth.6Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7Humanbeingsproducetoomuchcarbondioxidewhichcausestheglobalwarmingontheearth.8Accordingtothetexthumanbeingswoulddisappearintheend.Step
3.PhrasesandUsefulExpressions
1.accordingto…______________
2.awidelyacceptedtheory______________
3.beginwith_____________
4.inalldirections____________________
5.severalbillionyears______________
6.whether…ornot…_____________-
7.intime____________
8.cooldown_____________
9.befundamentalto…______________
10.achainaction______________
11.makeitpossiblefor…todo…_______________________
12.fillup…with…______________
13.forthefirsttime______________
14.bedifferentfrom…_____________
15.escapefromtheearthintospace______________________________
16.asaresultof…______________
17.too…to…_______________
18.millionsofyearstoe___________
19.depend/relyon…________________。