单项选择题

Even when textbooks are ______ through a school system, methods of teaching may vary greatly.

A．commonplace
B．standardized
C．competitive
D．generalized
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There is a ______ difference in meaning between the words surroundings and environment .
A．gentle
B．subtle
C．feeble
D．humble
单项选择题
We are glad to inform you that your application for a post in our school has been ______.
A．succeeded
B．successful
C．succeeding
D．successive
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