高一英语19单元reading课件
日期：2010-05-03 05:23
Unit19ModernAgriculturePre-readingPresentationReadingHomeworkStep1Pre-readingBLookatthepicturesatp45andcomparetraditionalandmodernfarming1Whatcanyouseeinthepictures?2Whataretheadvantagesanddisadvan-tagesofeachway?AWhatisfarminglikeinyourhometown?Inthefirstpicture:Achicken/AhenInthesecondpicture:AfarmerfeedingchickensInthethirdpicture:AmodernchickenfarmWhatarethedifferences?ComparetheoldandthemodernwaysofraisingchickensAfarmercanonlykeepafewchickensAfactorycankeepthou-sandsofchickensItcostonlyalittlemoneyItcostalottostartafactorydon’thavemanyproblemsifill，manydieorarekilledTheeggsandmeataretastyTheydon’ttastesodeliciousThechickensarefreenotfree，cansitinsmallcagesInthefirstpicture:Apileofanimalshit(manure)Inthesecondpicture:AbagofchemicalfertilizerWhatarethedifferences?ComparetheoldandthemodernwaysoffeedingthecropsItisfreeorcostverylittleItiseasytobeputintothefieldsItusuallyhasabadsmellIttakeslittleplacetostoreItisdif，
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