单项选择题

This passage is intended for someone who ______.

A．buys a new bike
B．learns to ride a bike
C．has a flat tyre
D．travels by bike
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单项选择题
You may examine whether air is leaking from the tyre by ______.
A．removing the wheel from the bike
B．drying the inner tube
C．running your fingers over the inside of the tyre
D．listening for air escaping
单项选择题
From the context we may see that a lever is a tool which can be used to ______.
A．push the tyre back into position
B．take out the inner tube
C．remove the wheel from the bike
D．replace the wheel on the bike
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