单项选择题

The American society is______ an exceedingly shaky foundation of natural resources, Which is connected 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
I'm very glad to know that my boss has generously agreed to______ my debt in return for certain service.
A．take away
B．cut out
C．write off
D．clear up
单项选择题
He was______ of the football team for five years. He really did a good job.
A．chapel
B．caption
C．captain
D．dean
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