单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．They could find more wild animals then.
B．The grass becomes yellow which is more beautiful.
C．There would be no mosquito stinging them.
D．There would be fewer insects.

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单项选择题

单项选择题

Passage Two Questions 30 to 32 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。

Passage Two
Questions 30 to 32 are based on the passage you have just heard.