单项选择题

● You will hear a conversation about quality control. ● For each question 23--30, mark one letter (A, B or C) for the correct answer. ● After you have listened once, replay the recording. How to check the taste

A. by eating them.
B. by eating them and doing chemical analysis.
C. by doing chemical analysis.

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● You will hear a conversation about quality control. ● For each question 23--30, mark one letter (A, B or C) for the correct answer. ● After you have listened once, replay the recording. How to check the taste 您的浏览器不支持 audio 元素。