{{B}}C{{/B}}

iF AnAmEriCAn is sAtisFiED with you, hE will put his thumB AnD ForEFingEr into A CirClE. thAt mEAns ok.But inBrAzil, thE vEry sign is ConsiDErED to BE ruDE. in polAnD, A guEst usuAlly prEsEnts FlowErs to his hostEss. thE numBEr must BE An oDD (奇数) onE.BEsiDEs, thE hostEss isn’t ExpECtED to rEmovE thE CovEr oF thE BunCh oF FlowErs.AnD usuAlly, rED rosE is A sign oF lovE. usuAlly wE noD to ExprEss our AgrEEmEnt AnD shAkE our hEADs to show DisApprovAl. to our surprisE thEsE BoDy movEmEnts mEAn thE oppositE inBulgAriA (保加利亚). thE DiFFErEnCEs in Customs AnD CulturEs in thE worlD ArE rEAlly notiCEABlE. wE shoulD lEArn morE ABout thEm to AvoiD EmBArrAssmEnt (窘迫). thEn, woulD you plEAsE rEmEmBEr: whEn in romE, Do As thE romAns Do.

thE sEntEnCE "whEn in romE, Do As thE romAns Do" mEAns thAt ______.A．wE shoulD lEArn From thE romAns
B．wE shoulD work As thE romAns Do
C、wE shoulD oBEy its Customs whEn wE ArE EntEring A Country
D．wE hAvE BEEn romAns