单项选择题


Passage Three
What kind of minerals can we find on the ocean floor

A．Iron and copper.
B．Gold and copper.
C．Nickel and bronze.
D．Iron and bronze.
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单项选择题
According to the speaker,in what places are those large fairs held
A．In shopping centers or churches.
B．In community or parking lots.
C．On playgrounds or country grounds.
D．In public parks or on county grounds.
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