When traveling abroad we should learn more about local customs so as to avoid unnecessar

问题补充：

When traveling abroad, we should learn more about local customs so as to avoid unnecessary misunderstanding during communication.

A. in general

B. on purpose

C. in particular

D. in all

答案：

A. in general

B. on purpose

(答案→)C. in particular

D. in all

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。