A3aReadthearticle.Thenwriteanswerstothequestionsbelow. 　　Restaurantscience 　　Restaurantownershavetoknowhowtomakefood.Theyalsohavetoknowhowtomakemoney.Herearesomethingsthey’velearnedfromscientificstudies.Thecolorredmakespeoplehungry.Readalsomakescustomerseatfaster.Manyfastfoodrestaurants,therefore,haveredfurnitureorwalls.Softcolorslikepinkandlightbluemakepeoplerelaxed,sotheyspendmoretimeeatingtheirmeals.Softlightingmakespeoplelookgood,butitmakesfoodlookbad.Loudmusicmaybeniceatfirst,butitsoonmakespeoplewanttoleave.Hardseatsalsomakecustomerswanttoeatquicklyandleave.Manyrestaurants,especiallyfastfoodrestaurantsusethisknowledgetomakecustomerseatfaster.Customersonlysitforabout20minutesbeforetheyleave.Becausecustomersdon’tstayverylong,smallrestaurantscanservemanypeopleeveryday. 　　B3aWhat’sthearticleabout?Doyouagreewithit? 　　Advertising:prosandcons 　　Inthemodernworld,advertisingiseverywhere!Somepeoplethinkthatadsaregreat.Othershateads,sayingthattheymakeourcitiesandcountrysidelookugly.Manyadsareaimedspecificallyatteenagers,andsomeyoungpeopleseemorethan100advertisementsaday.It'struethatsomeadscanbeveryuseful.Forinstance,theycanhelpyoutocomparetwodifferentproducts,sothatyoucanbuytheoneyoureallyneed.Theycanalsohelpyousavemoney.Whenpricesarelisted,youcangotothestorewiththelowestprice.Adsalsotellyouwhenstoresarehavingsales.However,someadvertisingcanbeconfusingormisleading.Sometimesthewordssoundgood,butdon'treallytellyouanythingaboutthequalityoftheproducts.Atothertimes,thepictureinanadlooksalotbetterthantherealthing.Andyouhavetobecareful.Attimesanadcanleadyoutobuysomethingyoudon'tneedatall.