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
Basically a robot is a machine which moves, manipulates, joins or processes ______ in the same way as human hand or arm.
A. characters
B. components
C. catalogues
D. collections
单项选择题
He ______ at his friend's unexpected good fortune.
A. trifled
B. skipped
C. snapped
D. rejoiced
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