题目内容：
Questionsarebasedonthefollowingpassage:
Nonverbal(非语言的)communicationhastodowithgestures,movementsandclosenessoftwopeoplewhentheyaretalking.Thescientistssaythatthosegestures,movementsandsoonhavemeaningwhichwordsdonotcarry.
Forexample,thebodydistancebetweentwospeakerscanbeimportant.NorthAmericansoftencomplainthatSouthAmericansareunfriendlybecausetheytendtostandclosetotheNorthAmericanwhenspeaking,whiletheSouthAmericanoftenconsiderstheNorthAmericantobe"cold"or"distant"becausehekeepsagreaterdistancebetweenhimselfandthepersonheisspeakingto.The"eyecontact"providesanotherexampleofwhatwearecallingnonverbalcommunication.Scientistshaveobservedthatthereismoreeyecontactbetweenpeoplewholikeeachotherthanthereisbetweenpeoplewhodon'tlikeeachother.Thelengthoftimethatthepersonwhomyouarespeakingtolooksatyoureyesindicatestheamountofinteresthehasinthethingsyouaretalkingabout.
Ontheotherhand,toolongagazecanmakepeopleuncomfortable.Theeyesapparentlyplayagreatpartinnonverbalcommunication.Genuinewarmthorinterest,shynessorconfidencecanoftenbeseenintheeyes.Wedonotalwaysconsiderasmiletobeasignoffriendliness.Someonewhoisalwayssmiling,andwithlittleapparentreasons,oftenmakesusuneasy.
Accordingtothepassage,nonverbalcommunication（ ）. A．isamethodoftenusedbypeoplewhocannotspeak
B．cantellsomethingthatwordscannot
C．canbeusedtotalkwithpeoplewhocannothear
D．islessusedthanwords
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答案解析：