单项选择题

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

A．How should we care for precious metal.
B．A standard unit for measuring weight.
C．How to judge the value of precious metals.
D．An introduction of the metric system.
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单项选择题
A．They are talking about the qualities a person should have.B．They are practicing descriptive words about people.C．They are making dialogues in their class.D．They are talking about good people around them.
A．They are talking about the qualities a person should have.
B．They are practicing descriptive words about people.
C．They are making dialogues in their class.
D．They are talking about good people around them.
单项选择题
What is the expectation of students enrolled in the student exchange program
A．High position in top management.
B．Permanent residency in other countries.
C．More career opportunities.
D．Political participation chances.
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