单项选择题

A．She assigned people to do this report.
B．She made investigations in the 700 schools.
C．She supported the report.
D．She wrote this report.
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单项选择题
A．Pollution of the environment.B．Over-killing by hunters.C．Destruction of their natural homes.D．A new generation of pest killers.
A．Pollution of the environment.
B．Over-killing by hunters.
C．Destruction of their natural homes.
D．A new generation of pest killers.
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