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 not be 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 give rise to unpleasant feelings. Unfortunately, modern drivers can’t even learn to drive, let alone master the roadmanship. 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.

21. The passage mainly talks about          .

A. road politeness          B. traffic jams   C. good manners             D. modern drivers

22. According to the writer, a good driver should         .

A. beat back when forced to face rude driving

B. be able to recognize politeness when he sees it

C. encourage old ladies to cross the roads whenever they want to

D. join in traffic stream quickly however other people feel