单项选择题

Questions 20 to 23 are based on the conversation you have just heard.
（）

A．To inform him of a problem they face.
B．To request him to purchase control desks.
C．To discuss the content of a project report.
D．To ask him to fix the dictating machine

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单项选择题

A．She has completely recovered.B．She went into shock after an operation.C．She is still in a critical condition.D．She is getting much better.

A．She has completely recovered.
B．She went into shock after an operation.
C．She is still in a critical condition.
D．She is getting much better.

单项选择题

The distribution of iPhones among students has raised concerns that they will （）

A．induce students to buy more similar products
B．increase tension between professors and students
C．further distract students from class participation
D．prevent students from accumulating knowledge

Questions 20 to 23 are based on the conversation you have just heard. （）

Questions 20 to 23 are based on the conversation you have just heard.
（）