单项选择题

The American society is ______ an exceedingly shaky foundation of natural resources, which is con nected with the possibility of a worsening environment.

A．established on
B．affiliated to
C．originated from
D．incorporated with
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单项选择题
Part of them once again ______ to their former prejudices in regard to Lincoln.
A．reversed
B．reverted
C．recurred
D．restored
单项选择题
We only help to ______ it right when he begins to suffer the results of being ill-prepared for life's test and difficulties.
A．correct
B．rectify
C．reclaim
D．pat
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