单项选择题

Questions 29 to 31 are based on the passage you have just heard.

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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Wilcox’s father had occasionally sold the relics found in his land since 1951.

单项选择题

Questions 29 to 31 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。