单项选择题

Many rare species of plants and animals are threatened with______ with the worsening of environment and mass hunting.

A．migration
B．extinction
C．distinction
D．distraction
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Her husband was disabled after a traffic accident, so the director of board______ her to act for her husband.
A．identified
B．authorized
C．rationalized
D．supervised
单项选择题
The captain's confidence during .the big storm______ that the passengers safe.
A．retrieved
B．released
C．reassured
D．revived
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