10．When you are in Hong Kong，you must be very careful in the streets，because the traffic drives on the left．It is different from that in other areas of China．
If this is the first time you have come to Hong Kong，you must look to the right side and then the left before you cross the street．If the traffic lights are red，the traffic must stop．People on foot can cross the road carefully．But if the traffic lights are green，the traffic can go．People on foot mustn't cross．
When people go to or come back from work in the morning or evening，the streets are very busy．Traffic is the most dangerous，especially for the children．
When you go by bus in Hong Kong，you have to be careful，too．You must always remember the traffic moves on the left．Have a look first，or you will go the wrong way．
In Hong Kong，there are many big buses with two floors．You can sit on the second floor．From there you can have a good view．It's very interesting．
根據(jù)短文內(nèi)容，選擇最佳答案．
51．The traffic drivesA in Hong Kong．
A．on the left
B．on the right
C．in the streets
52．People on foot can cross the road whenB．
A．the traffic lights are green
B．the traffic lights are red
C．the traffic goes
53．In Hong Kong，the traffic is the most dangerousB．
A．in the morning
B．in the morning or evening
C．in the afternoon
54．If you want to have a good view in a bus，you canC．
A．stand in the bus
B．sit on the first floor
C．sit on the second floor
55．If you are waiting for a bus，you should standA．
A．on the left side of street
B．on the right side of street
C．on either side of street．
