单项选择题

Questions 19 to 21 are based on the conversation you have just heard.
What do John and Arthur do at Sonatech（）

A．Make phone calls to promote sales.
B．Arrange business negotiations.
C．Take orders over the phone.
D．Handle complaints from customers.

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单项选择题

What might be Americans’ attitude towards government regulation of sugar consumption（）

A．Enthusiastic.
B．Indifferent.
C．Disapproving.
D．Supportive.

单项选择题

Why do some researchers think sugar should be considered a controlled substance （）

A．It contains nothing but empty calories.
B．It is as harmful as morphine and heroin.
C．It works the same way as alcohol and tobacco in the human body.
D．Excessive intake of sugar results in liver toxicity and various diseases.

Questions 19 to 21 are based on the conversation you have just heard. What do John and Arthur do at Sonatech（） 您的浏览器不支持 audio 元素。

Questions 19 to 21 are based on the conversation you have just heard.
What do John and Arthur do at Sonatech（）