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1、英语：Unit2《Healthyeating》活页练习（新人教版必修3）活页练习（1） AIncreasingly,overthepasttenyears,people---especiallyyoungpeople–havebecomeawareoftheneedtochangetheireatinghabits,becausemuchofthefoodtheyeat,especiallyprocessedfood(加工过的食品),isnotgoodforthehealth.Asaresult
2、,therehasbeenagrowinginterestinnaturalfoods:foodswhichdonotcontainchemicaladditives(添加剂)andwhichhavenotbeenaffectedbychemicalfertilizers(化肥),widelyusedinfarmingtoday.Naturalfoods,forexample,arevegetables,fruitandgrainwhichhavebeengrowninsoilthatisrich
3、inorganicmatter.Insimplewords,thismeansthatthesoilhasbeennourished(给…营养)byunusedvegetablematter,whichprovidesitwithvitaminsandminerals.Thisinitselfisanaturalprocesscomparedwiththeuseofchemicalsandfertilizers,themainpurposeofwhichistoincreasetheamount—
4、butnotthequality—offoodsgrownincommercialfarmingarea.Naturalfoodsalsoincludeanimalswhichhavebeenallowedtofeedmovefreelyinhealthypastures(牧场).Comparethiswithwhathappensinthemassproductionofpoultry(家禽)：therearebatteryfarms,forexample,wherethousandsofchi
5、ckenslivecrowdedtogetherinonebuildingandarefedonfoodwhichislittlebetterthanrubbish.Chickenskeptinthiswayarenotonlytastelessasfood;theyalsoproduceeggswhichlackimportantvitamins.Thereareothersidesofhealthyeatingwhicharenowreceivingincreasingattentionfro
6、mexpertsondiet.Take,forexample,thequestionofsugar.Thisisactuallyunnecessaryfood.Itisnotthatsugarisharmfulinitself.Butitdoesseemtobeaddictive:thequantityweusehasgrownsteadilyoverthelasttwocenturiesandinBritaintodayeachpersonconsumesanaverageofpoundsaye
7、ar!Yetallitdoesisprovideuswithenergy,intheformofcalories.Therearenovitaminsinit,nominerals,andnofibre.1.Peoplehavebecomemoreinterestedinnaturalfoodsbecause______.A.theywanttokeephealthyB.theywanttotasteallkindsoffoodsC.naturalfoodsaremoredeliciousthan
8、processedfoodsD.theywanttoreturntonature2.ChickensraisedinpoultryfarmsareallofthefollowingEXCEPTthat_____.A.theyarefedonfoodwhichislittlebetterthangarbageB.theyliveinverycrowdedconditionC.theeggstheyproducelackvitaminsD.theyareallowedtomoveabo
