单项选择题

Some companies have introduced flexible working time with less emphasis on pressure ______.

A．than more on efficiency
B．and more on efficiency
C．and more efficiency
D．than efficiency
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单项选择题
In some eases, your instructor may tell you the topics ______ or may give you a choice of top. les to write about.
A．in advance
B．ahead of
C．above all
D．right away
单项选择题
A．ofB．forC．inD．to
A．of
B．for
C．in
D．to
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