单项选择题

A．Masses.
B．Molten lava.
C．Gasses.
D．Unknown substances.
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单项选择题
A．＄ 120.B．＄ 240.C．＄ 60.D．＄ 180.
A．＄ 120.
B．＄ 240.
C．＄ 60.
D．＄ 180.
单项选择题
A．To look for a place to eat.B．To do some shopping.C．To finish the meeting and go home for a good rest.D．Stay in town for the whole week.
A．To look for a place to eat.
B．To do some shopping.
C．To finish the meeting and go home for a good rest.
D．Stay in town for the whole week.
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