资源描述:
《必修四Unit2讲解学习.pptx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Warmingup&ReadingWorkingthelandEnjoyaPoemByLiShenFarmersweedingatnoon,Sweatdownthefieldsoon.Whoknowsfoodonatray,Duetotheirtoilingday.corncottonbroomcornpeanutsoybeanplough(犁田)Haveyouevergrownanyplants?Doyouknowhowtogrowrice?seed/sowseeds(播种)irrigate(灌溉)fertilize(施肥)removetheweedstransplantinser
2、ttheyoungplantsintothefieldharvestingwinnowing(扬谷)AgricultureinthepastagriculturetoolsAgricultureinthemoderntimesagriculturalmachineandequipmentHigh-techgreenhouseOrange:Wheat(bread)Blue:RiceGreen:FoodmadeofflourWhite:potato,cottonItissaidthatthereare2.4billionpeoplewhoeatriceeverydaythroughou
3、ttheworld.WhatisthemainfoodinallEastAsianandSoutheastAsiancountries?Morethan800millionpeoplegotobedhungryeveryday!Ifthathappened,peoplemightdieofhunger.Thewholeworldwouldgetintotrouble.Whatdoyouthinkwouldhappeniftomorrowtherewassuddenlynoricetoeat?Ifyouhadthechancetodosomethingtohelpendhungerin
4、theworld,whatwouldyoudo?Howtosolvehunger?makinggooduseofthewastelanddevelopingthetechnologyto…inventinganewkindoffood…improvingthequalityofthesoilpreventingthepestsfromeatingourcropsInthelate1990s,Brown,anAmericanscholar,cameupwiththetheoryofChineseMenace(威胁),whichsaidthatinthe2030s,Chinesepopu
5、lationwilladdupto1.6billion,andhadthequestionwhowouldfeedthelargepopulationinChinaaswellasintheworld.Themosteffectivewaytosolvethefoodshortageproblemistoincreasetheyieldofthegraincropperlandareathroughtheadvancementofscienceandtechnology.Justatthattime,aChinesescientistdeclaredtotheworldthatChi
6、nacansolvetheproblembyhimselfandhelptosolvethesameproblemintheworld.YuanLongping“FatherofHybridRice”袁隆平,男,1930年9月出生于北京,1953年毕业于西南农学院农学系。毕业后,一直从事农业教育及杂交水稻研究。在中国人民正闹饥荒的20世纪60年代,袁隆平提出了杂交水稻的概念,这种新型水稻具有高产量的特点。10年后,他研制成功了一种产量比一般水稻高出30%的新型水稻。袁隆平一生献身于农业研究,先后受到联合国教科文组织、粮农组织的称誉。袁隆平虽已年届70岁,仍然一如既往地从事农业研究。袁
7、隆平人物简历APIONEERFORALLPEOPLEReadingScanning:Findoutthemainideaofeachparagraph.DrYuan’sbiographyDrYuan’sappearanceandhisachievement.DrYuan’sdreams.DrYuan’spersonality.Para1Para2Para3Para41.WhatdoseDr.Yuanlooklike?Why?2.Whatishisachie