Ⅰ.阅读理解(共15小题；每小题2分，满分30分)
A
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 altogether.
