单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A. The survey needs more than 4,000 people.
B. A minority of people never clean the keypad and the mouse.
C. 10 people never clean their keypad and mouse.
D. People never clean the keypad and mouse.
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单项选择题
A. Don’t drink beer. B. Drink dark beer. C. Don’t use ice. D. Boil the beer.
A. Don’t drink beer. B. Drink dark beer.
C. Don’t use ice. D. Boil the beer.
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