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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单项选择题
Many birds are injured when trying to ______ wings with large gaps in the clip.
A．slapped
B．scratched
C．flapped
D．fluctuated
单项选择题
The fact that she was a few minutes late is no reason for ______ her.
A．extracting
B．ejecting
C．draining
D．discharging
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