单项选择题

If you plant two apple trees in one square yard of land, and the trees' productivity ______ decline.

A．is bound to
B．is determined to
C．is unlikely to
D．is related to
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单项选择题
Usually he managed to find plenty of work to ______ him over hard times, I think it is a good ide
A．A. chewB. blowC. flipD. tide
单项选择题
When American astronaut Glen returned to the earth and a hearty welcome ______ him, he was considered to be a national hero.
A．waited for
B．anticipated
C．expected
D．awaited
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