课件类：人教版高一第三单元.ppt

Unit19Modernagriculture,-ListeningYaoLvping,Q1.Innewspapers,wefindtheexpression“returngrainplotstoforestry”,thatis,toturnfieldsbacktoplanttrees.Whyshouldwedoso?,Toprotectforests.,Forestsaredestroyed.,Forestsarewellprotected.,Q2.Ifmanyforestsaredestroyed,whatenvironmentalproblemswillhappen?,droughts,floods,Treesarecutdown.,Forestsareburnt.,Q3.Howcanfarmersmakethelandfertile?,Tousechemicalstoimprovethesoil.,Q4.Inancienttimes,howdidfarmersgetandusetheirfields?(),Theyburntapartofaforestandusedthislandforoneortwoyearsthenmovedaroundthecountry.Theyworkedonthearablelandandnevermoved.Theyworkedonthearablelandandsometimesmovedaroundthecountry.,A,Q5.Supposeyouareafarmer,youhavefieldsaroundlakeswhicharetoowet,howwillyoumakegooduseofthefields?,长江中、下游沿江湖泊及三角洲的“圩一池”系统及“田一池”系统，也是另一种类型的基塘系统，对我国广大低渍、内涝、积水地带的利用和改造，都具有重要参考价值。,珠江三角洲的桑基鱼塘，就是在鱼塘周围的塘基上种桑树，桑叶喂蚕，蚕沙（即蚕屎）和蚕蛹喂鱼，这些饵料先被水体上层的鱼儿吸食，上层鱼产出的粪便被水中的深游生物吸收，而深游生物又是中层鱼的食物，鱼的排泄物沉到塘泥中，又成为桑树的肥料。,toowettogrowcrops,ducks,fishpondsandfruittreesonthedikes,chickens,lake,lake,Wecanbuilddikesaroundthefieldsturningthefieldsintofishponds,plantfruittreesonthedikesandkeepchickensorducks.,Listentothetape.Thepassageyouheartalksabout()historyoffarming()protectionofnature()environmentalproblems()farmersinAmerica()farmersinChina()trees()fishing()pigs()dikes,2Whichofthefollowingsentencesaretrue(T)andwhicharefalse(F)?1InearlytimesfarmersinChinamovedaroundandburntforests.()AllfarmersinSouthAmericaburnforeststocreatefarmland.()Floodsanddroughtsaredisastersthatfarmerscannotstop.()4SomeofthelandinChinaistoowettogrowcrops.()5Fishfarmersdamagenature.(),T,F,F,T,F,dontdamagenature.,Some,can,3Listentothetapeandcompletethesentencesbyusingyourownwords.Whenfarminggoesagainstnature,_problemsaretheresult.Theearliestfarmers_nature.Theirwayofagricultureledto_and_.Itisanoldtruththat_shouldnot_nature.ThelandthatTanandXiaoZaoboughtwastoo_andcouldnotbeusedfor_.insteadtheychangedthefieldsinto_.Ontheirfarmtheykept_andgrew_.,environmental,destroyed,floods,droughts,farming,goagainst,wet,farming/growingcrops,fishponds,fish/ducks/chickens,fruittrees,Discussion:Doyouthinkitsnecessaryforfarmersinmoderntimestolearnmoreaboutthescienceknowledge?Why？,“要富口袋，先富脑袋”，成为广大农民致富奔小康的深切体会。,2004年3月5日在第十届全国人民代表大会第二次会议上温家宝代表国务院所作的政府工作报告：第六，加快农业科技进步。加强农业科研攻关，增强农业科技创新、储备和转化能力。加强农村科技推广体系建设，大力推广增产增效的先进适用技术，扩大农作物良种补贴范围和规模。,三农”问题的核心是农民问题第二，教育农民，提高农民素质既要注重科技知识，更要注重实用技术。提高农民素质，组织农民学习各方面的知识，包括现代农业知识、法律知识、知识，市场营销知识等，同时也可在农村举办各种各样的短训班，加强农业教育培训，让农民有更多的学习机会。在这方面，应高度重视农民的素质教育，省、市、县三级都应健全农民素质教育机构，特别加强对农民的实用技术培训。抓好科技在农村中的运用，做好科技推广和应用工作，将科教兴农真正落到实处。通过抓好农业科技示范园区建设，深化农技服务站所改革，逐步在农村建立起经营性服务与公益性职能分离的多元化农业技术推广服务体系，同时广泛开展农民科技文化特别是成套农业技术培训，全面提高农民素质。,Itsnecessary.1Toreadwhatiswrittenonbagsofchemicalstheybuy,toknowhowtousethem.2Toreadtheinstructionsonhowtousenewtoolsandmachines.3Tolearnandusenewmethodsoffarming.4Toexperimen