Hong Kong has about forty public beaches. Some of the beaches are among the best in the world. People can go there for a swim. You can go to most of them by bus. But to go to some beaches you must take a boat. There are toilets, dressing rooms and places to buy food and drinks on most of the beaches.
You will swim there without danger if you remember these instructions(说明):
1. Never swim alone.
2. Never swim after a meal or when you feel hungry or tired.
3. Don’t 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 dangerous for anyone to go into the water. A blue flag means that it is dangerous for children.
There are _________public beaches in Hong Kong.

A．forty	B．a little more or less than forty
C．less than forty	D．more than forty

We can reach __________by bus.

A．all the public beaches

B．no public beach

C．only a few public beaches

D．most of the public beaches

When you see a blue flag, you know that _________there.

A．women should not swim

B．children should not swim

C．nobody can swim

D．men should not swim