单项选择题

The future ______ of the bald eagle is still an important American ecological concern.

A．birth
B．evolution
C．migration
D．survival

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单项选择题

______ all the members of the commission present here who are here tonight, I would like to thank Professor Clinton for his informative talk.

A．On behalf of
B．On account of
C．In honor of
D．In terms of

单项选择题

I wish I could report a dazzling success but fact it does not quite ______.

A．come on
B．go off
C．come off
D．go on

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