单项选择题

Since the introduction of the new technique, the production cost ______ greatly.

A. reduces
B. is reduced
C. is reducing
D. has been reduced
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The meeting will begin at 9:00 according to the ______.
A. calendar
B. schedule
C. column
D. diagram
单项选择题
Encourage children to ______ some of their pocket money to buy Spring Festival presents.
A. set out
B. take off
C. put aside
D. give in
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