单项选择题

Questions 11 to 18 are based on the conversation you have just heard.
What does the man mean（）

A．The errors will be corrected soon.
B．The woman was mistaken herself.
C．The computing system is too complex.
D．He has called the woman several times.

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单项选择题

What do we learn about the student dropout problem in America（）

A．It is less serious in cities than in rural areas.
B．It affects both junior and senior high schools.
C．It results from a worsening economic climate.
D．It is a new challenge facing American educators.

Questions 11 to 18 are based on the conversation you have just heard. What does the man mean（） 您的浏览器不支持 audio 元素。

Questions 11 to 18 are based on the conversation you have just heard.
What does the man mean（）