单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．It will allow fewer trees to be cut.
B．It will require less labor costs.
C．It saves some shipping costs.
D．It will make them more competition.

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compulsory

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The first sentence of the sixth paragraph indicates that it is necessary to __________.

Passage One Questions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。