A．play an insignificant role in solving social problems.
B．are helpful to the elderly when they sue their children.
C．are very important in preserving Asian uniqueness.
D．are significant in helping the Bill get approved.

A．in Britain and America people speak utterly different languages
B．there are few things identical in British and American English
C．British and American English are imcomprehensible to each other
D．British and American English are understandable between the two people