9．
根据短文内容，判断下列句子的正误。
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. 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 can swim there without danger if you
remember these notes:
Never swim alone. Never swim after a meal
or when you feel hungry or tired.
Do not stay in the water for too long.
Never go out from a boat if you cannot
swim.
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.
