It is quite reasonable to blame traffic jams the cost of gas and the great speed of modern life but manners on the road are becoming horrible. Everybody knows that the nicest men would become fierce tigers behind the wheel. It is all right to have a tiger in a cage but to have one in the driver's seat is another matter.

　　Road politeness is not only good manners but good sense too. It takes the most cool－headed drivers great patience to give up the desire to beat back when forced to face rude driving. On the other hand a little politeness goes a long way towards reducing the possibility of quarrelling and fighting. A friendly nod or a wave of thanks in answer to an act of politeness helps to create an atmosphere of good will and calm so necessary in modern traffic conditions. But such behaviors of politeness are by no means enough. Many drivers nowadays don't even seem able to recognise politeness when they see it.

　　However misplaced politeness can also be dangerous. Typical examples are the driver who waves a child crossing the street at a wrong place into the path of oncoming cars that may be not able to stop in time. The same goes for encouraging old ladies to cross the road wherever and whenever they want to.

　　An experienced driver whose manners are faultless told me it would help if drivers learnt to correctly join in traffic stream without causing total blockages that gave rise to unpleasant feelings. Unfortunately modern drivers can't even learn to drive let alone master the roadman ship. Years ago experts warned us that the fast increase of the car ownership would demand more give－and－take from all road users. It is high time for all of us to take this message to heart.

　　9．The passage mainly talks about ________.

　　A．road politeness B．traffic jams

　　C．good manners D．modern drivers

　　解析：主旨大意题。本文主要讲了道路行驶中的礼貌问题，故A项正确。

　　答案：A

10．Troubles on the road are often caused by ________.