单项选择题

A．Heien is talkative.
B．Helen is sociable.
C．Helen is active.
D．Helen is quiet.
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单项选择题
C
单项选择题
Although we all depend on the resources of nature for our survival, _______.
A．industrial products are replacing all our natural resources
B．it is only on islands that nature survives
C．we have forgotten what our original countryside looked like
D．we have allowed large areas of countryside to be spoilt by industrial development
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