单项选择题

A layman in this field______ this type of approach to improving work efficiency.

A．originated
B．speculated
C．generated
D．manufactured
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单项选择题
Students can be expelled for refusing to______ to school rules.
A．confine
B．confront
C．conform
D．confirm
单项选择题
The discrepancies between these different analyses______ a number of problems.
A．summon
B．pose
C．highlight
D．marshal
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