When you travel (旅游) in Hong Kong, you must be careful of the traffic (交通) rules, because the
traffic keeps to the left and it's different from that of the interior (内地) of China. Before crossing the
street, you must look to the right and then to the left. If the traffic lights are red, the traffic must (必须)
stop, people can go across the zebra line. If the traffic lights turn green, the traffic can go, and people
mustn't cross the road.
     In the morning and in the evening, when people go to or come from work, the streets are very busy.
The traffic is the most dangerous.
     When you go somewhere by bus in Hong, you have to be careful, too. Always remember the traffic
keeps to the left. Have a look first, or you may go the wrong way. In Hong Kong, there are a lot of big
buses with two floors. You'd better sit on the second floor. From there you can watch the city very well.
How interesting !

    A. dangerous
    B. interest
    C. easy
    D. safe