单项选择题

There are more forces accelerating the progress of science than retarding it.

A．popularizing
B．shrinking
C．maintaining
D．hindering
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单项选择题
The highest and best form of efficiency is the spontaneous cooperation of a free people.
A．internal
B．compulsory
C．competent
D．natural
单项选择题
Various measures intended to facilitate economic recovery in the affected area have been suggested.
A．appeal to
B．attribute to
C．attend to
D．contribute to
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