单项选择题

Mary ______ my changed mood because she asked why I was so miserable.

A. had noticed
B. must notice
C. has noticed
D. must have noticed
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单项选择题
This situation was hardly ______ to the unification of the country through the medium of the press.
A. considerate
B. conducive
C. concordant
D. consistent
单项选择题
National, regional and local beer festivals present a vast ______ of beers to the public and help gain many new members.
A. amount
B. kind
C. range
D. assortment
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