问题描述：
We can see many traffic signs on both sides （边） of the roads or streets．Some tell the drivers what to do，and others tell them what not to do．The traffic signs are the traffic rules．All the people must obey the rules．
Each traffic sign has its meaning （意思）．Do you see the sign"P"？Do you know its meaning？
In big cities，there are a lot of cars and buses．They can't stop on the street．If a driver wants to stop his car，he must find a place for his car-a car stop．For a driver，how does he find a car stop？The traffic sign"P"can help him．"P"is the first letter of the word"Park"and its meaning is"You can stop your car here!"After the driver finds the car stop，he can park his car there．And then he can do other things．
It's very important （重要的） to obey the traffic rules．If you live in the city and go to school by bike every day，you must be very careful，or you may have an accident．You can't ride too fast，and you can't let your classmates or friends sit behind you．You have to stop at a stop sign．
61．We can see many traffic signs___．
A．on the farm
B．on the street
C．in the hospital
62．Traffic signs tell us___．
A．what to do
B．what not to do
C．A and B
63．What does the sign"P"mean？___
A．A driver can stop his car here．
B．A driver can't drive too fast．
C．A driver can do other things．
64．Which of the following is True？___
A．You must ride a bike to school if you live in the city．
B．You can ride your bike fast every day．
C．Everyone must obey the traffic rules．
65．What's the best title of this passage？（文章标题）___
A．Traffic signs and rules
B．Traffic accidents
C．No Parking．