senior1Unit19课件
日期：2010-10-25 10:33
ByDangYinliangApril10th2005WelcometomyclassUnit19ModernAgriculturePre-readingPresentationReadingHomeworkTask1Pre-readingBLookatthepicturesatp45andcomparetraditionalandmodernfarming1Whatcanyouseeinthepictures?2Whataretheadvantagesanddisadvan-tagesofeachway?AWhatisfarminglikeinyourhometown?Inthefirstpicture:Achicken/AhenInthesecondpicture:AfarmerfeedingchickensInthethirdpicture:AmodernchickenfarmWhatarethedifferences?ComparetheoldandthemodernwaysofraisingchickensAfarmercanonlykeepafewchickensAfactorycankeepthou-sandsofchickensItcostonlyalittlemoneyItcostalottostartafactorydon’thavemanyproblemsifill，manydieorarekilledTheeggsandmeataretastyTheydon’ttastesodeliciousThechickensarefreenotfree，cansitinsmallcagesInthefirstpicture:Apileofanimalshit(manure)Inthesecondpicture:AbagofchemicalfertilizerWhatarethedifferences?ComparetheoldandthemodernwaysoffeedingthecropsItisfreeorcostverylittleItiseasytobeputintothefieldsItusua，
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