题目内容：
根据下面内容，回答题 ManyvisitorsfindthefastpaceatwhichAmericanpeoplemoveverytroubling.One'sfirstimpressionislikelytobethateveryoneisinarush.Citypeoplealwaysappeartobehurryingtogetwheretheyaregoingandareveryimpatientiftheyaredelayedevenforabriefmoment.
Atfirst,thismayseemunfriendlytoyou.Driverswillrushyou;storekeeperswillbeinahurryastheyserveyou;peoplewillpushpastyouastheywalkalongthestreet.Youwillmisssmiles,briefconversationswithpeopleasyoushopordineawayfromhome.DonotthinkthatbecauseAmericansareinsuchahurrytheyareunfriendly.Oftenlifeismuchsloweroutsidethebigcities,asistrueinothercountriesaswell.
AmericanswholiveincitiessuchasNewYork,Chicago,orLosAngeles,oftenthinkthateveryoneisequallyinahurrytogetthingsdone;theyexpectothersto"pushback",justascitypeopledoinTokyo,SingaporeorParis,forexample.Butwhentheydiscoverthatyouareastranger,mostAmericansbecomequitekindlyandwilltakegreatcaretohelpyou.Manyofthemfirstcametothecityasstrangersandtheyrememberhowfrighteninganewcitycanbe.Ifyouneedhelporwanttoaskaquestion,chooseafriendly-lookingpersonandsay,"Iamastrangerhere.Canyouhelpme?"
Mostpeoplewillstop,smileatyou,andhelpyoufindyourway,oransweryourquestions.Butyoumustletthemknowthatyouneedhelp.Otherwisetheyarelikelytopassyouby,notnoticingthatyouarenewtothecityandinneedofhelp.Occasionally,youmayfindsomeonetoobusyorperhapstoorushedtogiveyouaid.Ifthishappens,donotbediscouraged:justasksomeoneelse.MostAmericansenjoyhelpingastranger.
ManypeoplewhofirstvisittheUnitedStateswillfindthat__________. A．Americaisahighlydevelopedcountry
B．Americancitypeopleseemtobealwaysinarush
C．thefastpaceinAmericanlifeoftencausesmuchtrouble
D．Americansareimportantandunfriendlypeople
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