人教版必修四unit2-reading-练习讲解(共35张PPT)

Unit2Workingthelandpre-readingWhatproblemdotheyshow?Howdoyoufeelwhenyouseethepictures?Howmuchlandcanbeusedforfarming?1.3/4ofourearthiscoveredwithwater!2.1/2ofthispieceistoohot,cold,orwetforfarming!3.3/4ofthispartisusedforroads,buildingslikehouses,schools!4.Only1/32oftheearthisusedforfarming!①②③④⑤SuperhybridriceTask1ScanningPara1A.DrYuan’sdreams.Para2B.DrYuan’spersonality.Para3C.DrYuan’sbiography.Para4D.DrYuan’sappearanceandhisachievement.Para1AppearanceandAchievement.1.Appearanceface:arm:body:sunburntsunburntslimbutstronglookslikea______farmerAlthoughheisoneofChina’smostfamousscientists,YuanLongpingconsidershimselfafarmer,forheworksthelandtodohisresearch.Indeed,hissunburntfaceandarmsandhisslim,strongbodyarejustlikethoseofmillionsofChinesefarmers,forwhomhestruggledforthepastfivedecades.DrYuanislikemoreafarmerthanascientist.Para1appearanceandachievement.1.Appearanceface:arm:body:sunburntsunburntslimbutstronglookslikea______farmer2.achievementsHegrowswhatiscalled_____________,whichmakesitpossibletoproduce_________moreofthecropinthesamefields.superhybridriceone-fifthPara.2HisbiographyTimeinformation19301953AsayoungmanInarecentharvestnowBorninBeijingGraduatedfromcollegeHungerwasadisturbingproblem.searchforawaytoincreasethericeharvest.200milliontonswasproducedCirculatinghisknowledge22%7%Means?UNridtheworldofhungerThankstohisresearch,theUNhasmoretoolsinthebattletoridtheworldofhunger.由于他的研究，联合国在消除世界饥饿的战斗中有了更多的方法．Usinghishybridrice,farmersareproducingharveststwiceaslargeasbefore.using作状语，修饰后面整个句子Paragraph3•Topicsentence?•DrYuanisquitesatisfiedwithhislife.•Hedoesn’tcareabout______and_______.Helikesfreedomforhissearchandhobbies.famemoneyPersonalityPara4:hisdreamsHisfirstdreamHisseconddream▲Astallassorghum▲Asbigasanearofcorn▲AshugeasapeanutToexporthisricesothatitcanbegrownaroundtheglobe.1.himself(as)afarmer认为他自己是个农民2.theland耕种土地，在田间耕作3.doone’s进行研究4.faceandarms被太阳晒黑的脸庞和手臂5.thepastfive在过去的50年里6.thefirstagriculturalpioneerrice第一个种高产水稻的农业先锋7.ahigh高产量8.graduateSouthwestAgriculturalCollege从西南农学院毕业9.life人生目标10.thegreatneed对……巨大的需求11.aproblem一个令人烦恼的问题12.search寻找13.without___theareaoffields不扩大农田面积14.one’sknowledge传播知识15.developedcountries欠发达国家16.幸亏，由于17.theworldhunger消除（解决）世界饥饿18.harveststwicebefore产量是从前的两倍19.bequite对…….非常满意20.care喜欢；照顾；关心；___littleabout对…很少关心21.wouldrathersth.宁愿做……22.spend…在...上花费...23.acomfortablelife过舒适的生活24.rather而不是25._______sb.for使…做好准备，为…装备26.givehimless_todosth给他更少的自由…27.__from从…中醒来28.thehopeof怀着……希望29.__rice出口大米30.theglobe全球，全世界31.makeitpossible_________…使…成为可能1.Asayoungman,hesawthegreatneedforincreasingthericeoutput.2.Atthattime,hungerwasadisturbingprobleminmanypartsofthecountryside.Whenhewasyoung,heknowhowimportantitwastoproducebiggerricecrops.=itisimportantto…=doingsth.isimportant/ofgreatimportanceDuringhisearlyyears,muchofthecountrysidewastroubledbyhunger.=bebadlyinfluenced/affectedbyhaveabadeffecton…3.Usinghishybridrice,farmersareproducingharveststwiceaslargeasbefore.4.Spendingmoneyonhimselforleadingacomfortablelifealsomeansverylittletohim.Astheyusehishybridrice,farmersareproducingtwiceasmuchriceasbefore.Heisnotinterestedin/careslittleaboutbuyingthingsforhimselforhavinga…5.Justdreamingforthings,however,costsnothing.Itdoesn’tcostanythingtodreamforsomething.A3B篇WhatisCA?WhatarethethreeprinciplesofCA?HowdoesCAhelpreducesoildamage?Whatarethefunctionsofcovercrops?Whatistherotationofcrops?Itismeanttokeepsoilhealthy,developsustainablefarming,andpreventthedamagingoveruseofland.Gainingpopularity…,CAaimstohelpfamerskeeplandhealthyandproductiveby…becomepopularControltillageWhatistillage?turnovernutrientcurrentunusableByavoidingtilling,organicsoilmattermayactuallybenefitascroppiecesformaprotectivesurfaceoverthesoil.covercrops1.Thesecropspreventwaterandsoillossby…2.Covercropsalso…Bycyclingcropsthatneeddifferentnutrientsthroughthesamefield,thesoil…Ⅰ.statisticssunburntoutputcirculatednationalitystruggleddecaderegretThereforenutritionⅡ.A)1.根据2.buildup3.幸亏，由于4.leadto5.对…感到满意6.focuson7.宁愿，宁可8.keep…freefrom/of9.摆脱，除去10.withthehopeofB)1.withthehopeof2.leadto3.buildup4.wouldrather5.keepfreefrom6.befocusedon7.wassatisfiedwith8.Accordingto9.Thanksto10.ridofⅠ.underlinesummaryexportsbacteriachemicalexpandsⅡ.productionhungrydisturbingfreedomequipmentoccupationconfusingdiscoverycommentsreducedⅢ.morethancaredforasasputbackdoneresearchon1._____thepasthalfcentury在过去的半个世纪期间2.______fertilizers化学肥料3.______useof…的长期使用4.cause______to对…造成伤害5.______off洗掉6.food_____食品供应7.______cancer导致癌症8.In______另外，此外9.turnto_____farming转向有机农业10.____on集中…于11.____soil________disease使土壤免受疾病的影响12.every_________每隔几年12.make______readyfor使…为做好准备13.putdown_____扎根14.avoid______避免做某事1.Whataresomeoftheproblemscausedbychemicalfertilizers?2.Inaddition,fruit,vegetablesandotherfoodgrownwithchemicalfertilizersusuallygrowtoofasttobefullofmuchnutrition.化肥带来的问题有哪些呢？另外，施过化肥的水果、蔬菜和其他食物通常生长得过快而营养不足。过去分词作定语3.Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil,makingitreadingforcropssuchaswheatorcornthatneedrichandfertilesoil.像豌豆或者大豆这样的农作物将重要的矿物质带回土壤，从而使之适宜于种植要求土壤