单项选择题

What is the conversation mainly about

A．How to care for precious metals.
B．A standard unit for measuring weight.
C．The value of precious metals.
D．Using the metric system.
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单项选择题
What are the speakers mainly discussing
A．Giving a psychological evaluation.
B．How to assess a class presentation.
C．Making categories for a lesson plan.
D．Study notes for a test.
单项选择题
Where will the speakers meet each other
A．At the snack bar.
B．In front of the library.
C．At the International Center.
D．In front of the campus mailbox.
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