阅读理解。

     Hong Kong has about forty public beaches. Some ofthe beaches are

among the best in the world. People can go there for swimming. You

can go to most of them by bus. To go to some beaches, you must take a

boat. There are toilets, changing rooms and places to buy food and drink

on most of the beaches.      

     You will swim there without danger if you remember these instructions:

1. Never swim alone.2.Never swim af-ter a meal or when you feel hungry

or tired.3.Do not stay in the water too long.4.Never go out in a boat if

you can't swim.    

     Remember:A red flag means that it is dan-gerous for anybody to go

into the water.A blue flag means that it is dangerous for children.

1..How many public beaches are there in Hong Kong?

2..How can people go to most of the beaches?

3.Can you go swimming after a meal or when you feel hungry?

4.What does a red flag mean?

5.What does a blue flag mean?