单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The mother and the son.
B．The customer and the waiter.
C．The teacher and the student.
D．The doctor and the patient.
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单项选择题
A．How to get a part-time job.B．A terrible accident on campus.C．How to help a classmate.D．Independence of college students.
A．How to get a part-time job.
B．A terrible accident on campus.
C．How to help a classmate.
D．Independence of college students.
单项选择题
In order to handle the greenhouse effect, the UNEP warns that ______.
A．the world must agree on what has caused the changing climate
B．the world must agree on what may result from the changing climate
C．all the countries should agree on how to reduce the greenhouse gases
D．all the countries should take part in looking for the solutions
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