单项选择题

The country's economic future is seriously________ by the mass immigration of young people.

A．tumbled
B．jeopardized
C．crumbled
D．hindered
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单项选择题
An area several times as large is suffering a decline in productivity as it is________ by overuse.
A．depressed
B．defaulted
C．deteriorated
D．degraded
单项选择题
She slowly opened her eyes, only to be ________ by the strong sunlight.
A．blazed
B．distorted
C．distracted
D．dazzled
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