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※You won’t drown（溺水）if you remember these rules：

●Never swim alone．

●Never swim at a beach if there is no lifeguard（救生員）．

●Never swim after a meal or when you feel hungry or tired．

●Never believe in rings（救生圈）or other swimming aid. You may lose them or they may let you sink．

●Don't stay in the water too long if it is cold．

●Never go out in a boat if you can't swim or it you are not wearing a life jacket

※If you get into difficulties，this is what you should do：

●Keep calm．Save your strength and your breath．

●Try to float（漂浮） on the water by moving your feet as if you are climbing some stairs．

●Raise your right arm and cry for help．

※Remember ：

●A red flag means that it is dangerous for all swimmers to enter the water．

●A blue flag means that it is dangerous for children and weak swimmers to enter the water．

1．Swimming is a good sport，________

A．and you'd better go swimming alone

B．but you’d better not go swimming after a tiring climb

C．so you should stay in the water for a long time

D．and you may swim when you see a red flag

2．Rings and other swimming aids________

A．can not be believed in when swimming

B．will never let you sink

C．will never be lost

D．are useless at all in swimming

3．It is dangerous if________

A．you swim with others

B．you stay in the water for a short time

C．you can not swim，but go boating alone

D．you wear a life jacket when boating

4．If you see a blue flag，you should know________ may swim there．

A．all swimmers                                          B．only children

C．nobody                                                 D．strong swimmers

5．If you get into trouble，you should_______

A．keep silent                             B．climb the stairs

C．put up your right arm for help                D．ask for a red flag