单项选择题

A．Their surface features.
B．Their temperature.
C．Their chemical composition.
D．Their age.
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单项选择题
A．Straight ahead on the street.B．On the left.C．On the right.D．Over there.
A．Straight ahead on the street.
B．On the left.
C．On the right.
D．Over there.
单项选择题
A．Material life.B．Spiritual life.C．Sports life.D．Working life.
A．Material life.
B．Spiritual life.
C．Sports life.
D．Working life.
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