根据短文内容，判断下列各句正误。正确的在题前括号内写“T”’错误的写“F”。

     Hong Kong has about forty public beaches. Some of them are very famous around the world. People can go

there for a swim. You can go there by bus. To go to some beaches you must take a boat.

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

     ★ Never swim alone. 

     ★ Never go out in a boat if you cannot swim. 

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

     ★ Don't stay in the water too long. 

     Remember: A red flag means that it is dangerous for anybody to go into the water. A blue flag means that it is dangerous for children.

( ) 1. There are about 40 public beaches in Hong Kong.

( ) 2. You should swim after a meal.

(     ) 3. You can take a bus to go to most of the public beaches.

(     ) 4. You'd better swim when you're alone.

(     ) 5. If you were a child, you could swim when you saw a red flag.