阅读理解

Whenwespeakofabasichumanneedwemeansomethingwhichisnecessarytolifesomethingwecannotpossiblydowithout．Foodisabasichumanneed．Withoutitwewouldstarvetodeath;butevenifwehaveplentyoffoodbutofthewrongkindourbodieswillsufferfromalackoftherightfood．Thisisknownasmalnutrition．

Inprimitivecountriespeoplewantonlythefoodswhichcanbegrownneartheirhomeswhereasweeatfoodswhichareoftengrownmanythousandsofmilesawayfromourhomes．Justthinkofthedifferenttypesofmeatwecatbeefmuttonporkchickenturkeygooseandrabbit．Wecouldmanageonadietofonekindofmeatbuthowmonotonousitwouldbecome!EventurkeywhichmostofuseatonlyatChristmaswouldbecomemonotonous(单调的)ifweateiteveryday．

Yetwecannotliveonmeataloneandneedotherfoodslikebreadandfruittoprovideuswithotheressentialnutrientswhichweneedtokeepourbodieshealthy．

Wecanagreewithprimitivemanthatfoodisabasicneedbutwediffer：fromhiminourfoodwantsbecauseof．thewidevarietyoffoodwehaveavailablecomparedwithhim;wehaveawiderchoice．Takefruitforexamplenotonlycanweenjoythefruitsgrowninthiscountrybutbecauseofmodemmethodsoftransportandfoodpreservationwecanalsoenjoythemoreexoticfruitsfromcountriesthousandsofmilesawaywhereasprimitivemanislimitedinhischoicetothekindsoffruitwhichactuallygrowwherehelives．

Howevertheydifferinsatisfyingtheirhungerprimitiveandcivilizedmenbothexperiencethebasicneedforfood．

Thesameistrueofthesecondofourhumanneeds．Clothingisnecessarytoregulatetheheatofourbodies．Sincewelive：inatemperateclimateweneedmoreclothesthanpeoplelivingintropicconditions．Likewiseourclothingneedstochangewithseasons．

Shelterthethirdofourneedsdependsupontheclimatetheskillofthebuilderone'ssocialpositionandthematerialsavailable．ThesimpleshelteroftheaboriginalwouldnotdoforUSandyetitsatisfieshisneeds．Thethreebedroomedsuburbanhouseoftheaveragefamilywo