单项选择题

A．In a spacecraft.
B．In an observatory.
C．On the moon.
D．In an astronomy class.
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单项选择题
A．Yes, there is a little.B．Yes, there is plenty.C．No, there is nothing left.D．No, there isn’t.
A．Yes, there is a little.
B．Yes, there is plenty.
C．No, there is nothing left.
D．No, there isn’t.
单项选择题
A．50 cents.B．$2.00C．$2.50D．$3.00
A．50 cents.
B．$2.00
C．$2.50
D．$3.00
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