单项选择题

Questions 19 to 22 are based on’ the conversation you have just heard.

A. It has many joints.
B. It can be easily planted.
C. It has a delicate fragrance.
D. It is a strong plant but can be easily bent.

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单项选择题

A. Cutting public expenses.
B. Forbidding carbon emission.
C. Developing public resources.
D. Encouraging energy conservation.

单项选择题

A. To make them live longer.
B. To make profits from them.
C. To prove the technology useful to them.
D. To learn about their physical condition.

Questions 19 to 22 are based on’ the conversation you have just heard. 您的浏览器不支持 audio 元素。