Canadian school buses are called “the safest school buses in the world”．All the school buses，which are in deep yellow，have the same style．School bus drivers have to receive strict training　before getting driver’s licenses． When a school bus runs through the city and carries children to a stop, the driver will turn on the red light and then show the sign“Stop”．At this time，all the vehicles(车辆)following the school bus must stop as if they met a red light．After all the children get on or off，the school bus will drive away．Then other vehicles can go on．

Many people will think of cartoons as soon as they talk about Japanese school buses．For a long time，cartoon pictures on school buses have already been popular and become models of Japanese school buses．When children see pink Hello Kitty or blue Doraemon, no one will refuse to go to school any more． On Japanese school buses，there’s always a headman caring for kids．If something happens suddenly，the headman will tell parents about it as soon as possible．

The color of Canadian school buses is       ．

A．red

B．yellow

C．pink

D．blue

From the passage, we know that       ．

A．Canadian school buses must have a headman

B．Canadian school buses should follow other vehicles

C．Japanese school buses may look cute

D．Japanese school bus drivers can get licenses easily

The passage is written mainly to________．

A．introduce school buses in Canada and Japan

B．suggest schools choosing better school buses

C．welcome students to Canada and Japan

D．ask students to obey traffic rules