单项选择题

A．5,000 years ago.
B．4,000 years ago.
C．50,000 years ago.
D．40,000 years ago.
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单项选择题
A．It made a lot of noise.B．It caused fires frequently.C．The fire from the furnaces polluted the air.D．The city authorities didn’t want to develop the glassmaking industry.
A．It made a lot of noise.
B．It caused fires frequently.
C．The fire from the furnaces polluted the air.
D．The city authorities didn’t want to develop the glassmaking industry.
单项选择题
A．Her knees were injured.B．Her foot were wet.C．She was tired.D．The sand was hot.
A．Her knees were injured.
B．Her foot were wet.
C．She was tired.
D．The sand was hot.
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