单项选择题

Questions 16 to 20 are based on the conversation you have just heard. What does Laura suggest that John do

A．Buy a used bicycle.
B．Buy a racing bicycle.
C．Replace the tires on his bicycle.

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问答题

为了做到这一点，大多数学员会骑上小摩托车在市里到处转悠，练习如何在城市的不同地点之间来回穿梭。

问答题

不管你要去的街道有多小、有多不起眼儿，他们都能准确无误地把你送到那里。