单项选择题

A．In a boat.
B．In a cave.
C．In a river.
D．In a tree.
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单项选择题
A．Quiet plants.B．Well-watered plantsC．Healthy plants.D．Thirsty plants.
A．Quiet plants.
B．Well-watered plants
C．Healthy plants.
D．Thirsty plants.
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