单项选择题

Passage Two
Questions 29 to 32 are based on the passage you have just heard.

A．Consumers were responsive.
B．Consumers were hostile.
C．Consumers turned cautious of it.
D．Consumers didn’t care all the time.

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单项选择题

单项选择题

Passage TwoQuestions 29 to 32 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。