单项选择题

A．to its best use
B．for its best use
C．as its best use
D．in its best use
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单项选择题
A．SometimesB．SometimeC．AlwaysD．Usually
A．Sometimes
B．Sometime
C．Always
D．Usually
单项选择题
A．as opposedB．on the contraryC．as opposed toD．on the objection to
A．as opposed
B．on the contrary
C．as opposed to
D．on the objection to
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