单项选择题

This species has nearly （died out） because its habitat is being destroyed.（）

A．turned dead
B．passed by
C．carried away
D．become extinct

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热门试题

单项选择题

A. A global problem
B. Closing city centres to traffic
C. Paying to get in
D. Not doing enough
E. Changing work practice
F. A solution which is no solution

单项选择题

The methods of communication used during the war were （primitive）.（）

A．reliable
B．effective
C．alternative
D．simple