A、 Pollution of the environment. B、 A new generation of-找考题网

单项选择题

A、 Pollution of the environment.
B、 A new generation of pest killers.
C、 Over-killing by hunters.
D、 Destruction of their natural homes.

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单项选择题

A、 At the beginning of the 19th century. B、 At the late of the 18th century. C、 At the beginning of the 18th century D、 In the middle of the 19th century.

A、 At the beginning of the 19th century.
B、 At the late of the 18th century.
C、 At the beginning of the 18th century
D、 In the middle of the 19th century.

填空题

39.

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