单项选择题

As skies fill with millions of migrating birds, European scientists say the seasonal miracle appears to depend on a seeming ______ The fatter the bird, the more efficiently it flies.

A．interruption
B．description
C．qualification
D．contradiction
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单项选择题
The local people could hardly think of any good way to ______ poverty they had endured.
A．shake off
B．ward off
C．put off
D．take off
单项选择题
Sports, and not learning, seem to ______ in that school.
A．appear
B．occupy
C．dominate
D．lead
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