题目内容：
Sometimesitisbetternottoknowthe（41）ofacountrythatyouarevisiting（42）itistoknowjustalittleofit．The（43）isthis:thenativesofyourhostcountrywilloftenrushto（44）youifyouseemcompletelylostandhelpless.Buttheywillusuallymisunderstandyoursmall（45）tospeaktheirlanguage．Theywillthinkthatyouknowalotmorethanyoudo．Forexample,IonceaskedthreepeopleincarefullymemorizedphrasebookSpanishhowtogettoabusstationinMexicoCity．（46）eachofthempouredoutafloodof（47）Spanish．TheresultwasthatIdidn'tunderstandawordandwanderedaroundforanhourbeforeIfoundthestation．BythenIhadmissedthebus．ThenexttimeIencounteredasituationlikethisinanothercity,Iwasalot（48）,soIacteddumbly．Tryingtolookverypitiful,I（49）astrangerandaskedsimply,"Busstation?"Henotonlytoldmehowtogetthere;heshowedmetotheplacewalkingthreeblocksoutofhis（50）tohelpapoor,dumbandhelplessstranger. 第（41）题选 A．conventions
B．customs
C．people
D．language
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