<　>转基因食品(GMFood)    Todaythereare6billionpeopleontheearth.Bytheyear2050theremaybe12.5billion.Thisisalotofpeopletofeed.Weneedmorefood.Onewaytoproducemorefoodisbygrowingstrongerplants.Forthousandsofyears,farmershavemadeplantsbetter.Everyseason,theypickthebestplantsforthenextseason.Itworksveryslowly.Since1983,scientistshavebeenabletochangeplantsmorequicklybychangingtheirgeneticmaterial(遗传物质).Foodsfromplantsgrowninthiswayarecalledgeneticallymodifiedfoods（转基因食品）,orGMfoods.    Bychangingthegeneticmaterialofaplant,itispossibletomakenewplants.Theymakeplantswhicharestrongagainstplantdiseases.Theycanalsohelpwithourdiseases:akindofriceisbeingprepared(准备),forexample,whichstopspeoplefrombecomingblind.RichcountriesproduceGMfoodsbecausetheyareeasytogrowandbringinmoremoney.Poorcountriesareinterestedinthembecausetheyhelpproducemorefood.    GMplantsarenotnatural.Nooneknowshowgoodorbadtheyare.MakingGMfoodsisonlyonewayoffeedingpeoplein2050.Therearestrongfeelingsagainstthem,becausetheyareunnatural.Theymayfeedpeople,thenhurtthemortheirchildrenlater.But,bothrichandpoorcountriesareveryinterestedintheiruse,andtheyarenotgoingtogoaway.In2050Wemaythinkdifferentlyaboutthem.<　>

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