单项选择题

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

A．They could drive the insects away.
B．They could keep the plants well-watered.
C．They could make the plants grow faster.
D．They could build devices to trap insects.

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单项选择题

A．Both are fast-moving sports.B．Both depend on good tactics.C．Both provide a lot of exercise.D．Both require a lot of training.

A．Both are fast-moving sports.
B．Both depend on good tactics.
C．Both provide a lot of exercise.
D．Both require a lot of training.

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

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