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 bothers Nancy about her neighbor’s son（）

A．He drives too fast.
B．He plays his guitar too loudly.
C．His radio wakes her children up.
D．His friends are too noisy.
单项选择题
How much did the woman pay for the coat（）

A．80 dollars.
B．60 dollars.
C．90 dollars.
D．15 dollars.
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