20、If you remember the following six ways of information，you'll know how to protect（保护）yourself．You'll be much safer at school and in your everyday life．

1）Always notice the environment（环境）around you．You shouldn't walk alone outside．Make sure where the public phones are．If anything dangerous happens，you can find them quickly．

2）Don't use earphones（耳机）when running in the school yard or on the street．You will keep yourself from the outside world and can easily get into trouble．

3）When taking a bus，school bags should be carried towards the front of your bodies instead of putting them on your backs，when buses are crowed，it is easy enough for thieves to steal the things in the bag on your back．

4）If you are followed by a stranger，cross the street and go in the other direction（方向）．Let the stranger know that you know he or she is there．Next，go and get help from others if it is necessary．Don't go home directly．You are safer in the street than you are in your home or in a lift（电梯）．

5）If you have to take a bus to a place far away，try to get to the shop only a few minutes before the buses leave．This stops a stranger from following you．On buses，don't sit alone．You should sit behind the drive or with friends．Don't sleep．

1．When you walk alone outside，you'd better ________．

A．phone your friends using the public phone first

B．sit at the side of the road and have a short rest

C．remember the things around you

D．get help from others

2．You should ________ to protect yourself when you are followed by a stranger．

A．ask the stranger what he wants to do

B．run home quickly or find a lift to go in

C．let him or her know you see he or she is there

D．turn back and walk towards him or her directly

3．It's _______ for you to use earphones when you're running outside．

A．dangerous            B．helpful                 C．necessary               D．important

4．When taking a bus to a place far away，you should ________．

A．sit alone in the back of the bus                         B．sleep well in the back of the bus

C．sit alone in the front of the bus                    D．sit behind the driver or with friends

5．When there are too many people on the bus，you should put your things ________．

A．on your back                                           B．beside you

C．in front of your bodies                                D．behind the conductor