单项选择题

Questions 11 to 13 are based on the following announcement. At the end of the announcement, you will be given 15 seconds to answer the questions.
Now, listen to the announcement.
What service must be paid for

A．Computer classes.
B．Training sessions.
C．Laser printing.
D．Package borrowin

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单项选择题

单项选择题

Questions 11 to 13 are based on the following announcement. At the end of the announcement, you will be given 15 seconds to answer the questions. Now, listen to the announcement. What service must be paid for 您的浏览器不支持 audio 元素。