必修2uni4 语言运用(gai)

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1、2011～2012学年度上学期高一英语导学案必修4Unit2No4姓名：小组：使用时间：2011,11.小组评价：教师评价：Unit2ofBook4WorkingthelandUsinglanguage编写人：徐红审核人：审批人：领导签字：姓名：小组：小组评价：教师评价：Task1:Readthepassagequicklyandanswerthefollowingquestions;1,Whyarechemicalfertilizerssopopularinfarmingtoday?Theyareagreatwaytosto

2、pcropandincrease2.Whatproblemscanbecausedbyusingchemicalfertilizers?Theycanthelandbyhelpfulbacteriaandpestsandbythegroundandundergroundwaterforalongtime.Theydamagepeople’shealthbybuildingupintheirbodiesandcancerorotherillnesses.3.Whatisorganicfarming?Organicfarmingm

3、eanscropswithoutusing.4.Whatisthemainreasonforusingorganicfarmingmethods?Themainreasonforusingorganicfarmingmethodsistogoodfoodandtotheenvironmentorpeople’shealthTask2:ReadthepassageagainandfindouttheanswerstotheQuestionsbelow:（）1.WhichstatementisWRONGaccordingtothe

4、text?A.Allcropsareorganic.B.Recently,theterm“organicfarming”hasgainedanothermeaning.C.Allfarmersusefertilizers.D.Scientistsbelievesomechemicalfertilizersarebetterforpeople.（）2.Whichisnotthereasonwhyorganicfarmersprefernaturalwastefromanimals?A.Itcankeepthefoodfreefr

5、omchemicals.B.Itcankeeptheair,soilandwaterfreefromchemicals.C.Itcankillharmfulpests.D.Itcanmakethesoilricherinmineral.（）3.Whatistheadvantageofusingchemicalfertilizers?A.Leavingchemicalsinthegroundforalongtimeisgoodforwatersupply.B.Theycangetthesoilexhausted.C.Theyca

6、nkillhelpfulbacteria.D.Theycankillharmfulpest.（）4.Theorganicfarmersdothefollowingsexcept______.A.addingfertilizerswhichisrichinmineralB.changingcropseverytwoorthreeyearsC.plantingseedsindifferentlayersofthesoilD.plantinggrassbetweencropstopreventthesoilfrombeingblow

7、nawayTask3:Findoutthefollowingphrasesinthepassageandrememberthem.1.化肥chemicalfertilizers2.对……造成损害cause/dodamageto3.洗掉某物washoff4.导致;造成(后果);通往leadto5.逐渐增强,建立buildup6.另外(还有)inaddition(to)7.使……免受(影响);keep…freefrom/of8.集中(注意力、精力)于focuson9.每隔几年everyfewyears10.避免做……avoiddo

8、ing翻译并背诵下面的句子：1、Overthepasthalfcentury,usingchemicalfertilizershasbecomeverycommoninfarming.译：2、Recently,however,scientistshavebeenfinding