When traveling abroad, we should ______ learn more about local customs so as to avoid unnecessary misunderstanding during munication.
A.in general
B.on purpose
C.in particular
D.in all
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C解析本题考查介词短语。出国旅游时，我们应该特别了解当地的习俗，以避免造成交往中不必要的误会。in particular特别，尤其是。