【OnedaywhileshoppinginasmalltowninsouthernCalifornia，itwasmymisfortunetobeapproachedbyaclerk．Heseemedmostunfriendlyandnotatallconcernedaboutmyintendedpurchase．Iboughtnothing，andmarchedangrilyoutofthestore】

　　OnedaywhileshoppinginasmalltowninsouthernCalifornia，itwasmymisfortunetobeapproachedbyaclerk．Heseemedmostunfriendlyandnotatallconcernedaboutmyintendedpurchase．Iboughtnothing，andmarchedangrilyoutofthestore．

　　Ontheoutsidewasadark-skinnedyoungmaninhisearlytwenties．Hisexpressivebrowneyesmetandheldmine，andinthenextinstantabeautiful，brightsmilecoveredhisface．Igaveinimmediately．Thepowerofthatbroadsmiledissolvedallbitternesswithinme，andIfeltthemusclesinmyownfacehappilyresponding．

　　"Beautifulday，isn'tit？"Iremarked，passing．ThenIturnedback．"Ireallyoweyouadebtofthanks，"Isaidsoftly．

　　Hissmiledeepened，buthemadenoattempttoanswer．AMexicanwomanandtwomenwerestandingnearby．Thewomansteppedforwardandvolunteered，"Sir，buthedoesn'tspeakEnglish．Doyouwantmetotellhimsomething？"InthatmomentIfelttransformed．Theyoungman'ssmilehadmadeabigpersonofme．Myfriendlinessandgoodwilltowardallmankindstandtenfeettall．

　　"Yes，"myreplywasenthusiasticandsincere，"tellhimIsaid，‘Thankyou!'"

　　"Thankyou？"Thewomanseemedslightlypuzzled．

　　IgaveherarmafriendlypatasIturnedtoleave．"Justtellhimthat，"Iinsisted．"He'llunderstand．Iamsure!"

　　Oh，whatasmilecando!AlthoughIhaveneverseenthatyoungmanagain，Ishallneverforgetthelessonhetaughtmethatmorning．Fromthatdayon，Ibecamesmile-conscious，andIpracticetheartdiligentlyanywhereandeverywhere，witheverybody．

　　56．Whydidtheauthorleavethestoreangrily？___

　　A．Hecouldn'tbuywhathewanted．

　　B．Theclerktreatedhimunkindly．

　　C．Theclerkdidn'tspeakEnglish．

　　D．Thestore'sgoodsweretoodear．

　　57．Bysaying"Ifeltthemusclesinmyownfacehappilyresponding"（inPara.2），theauthormeans___．

　　A．hesmiledbackattheyoungman B．hedidnotwanttosmile

　　C．hewouldthanktheyoungman D．hewasstillinabadmood

　　58．Theauthoraskedthewomantosay"Thankyou!"totheyoungmanbecausetheyoungman___．

　　A．hadhelpe