根据短文的开头Hong Kong has about 40 public beaches可知，香港有大约40个公共海滩

【题目】Hong Kong has about 40 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 will swim there without danger if you remember these instructions ：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 anybody to go into the water. A blue flag means that it is dangerous for children.

【1】There are _______ public beaches in Hong Kong..

A. more than forty       B. more or less forty

C. forty                  D. less than forty

【2】 We can reach _______ by bus.

A. only a few public beaches            B. most of the beaches

C. all the public beaches               D. any public beaches

【3】When you see a blue flag, you know that ______ there.

A. no body should swim

B. no body can swim

C. women should not swim

D. children should not swim

【4】Which of the following is true according to this passage?

A. You should not swim after lunch

B. You can’t swim for a short time.

C. You can always swim when you see a red flag.

D. You should not swim with other people.

【5】This passage mainly tell us ______.

A. it is not easy to go swimming in Hong Kong.

B. that Hong Kong has many best beaches

C. something about Hong Kong’s beaches and swimming there

D. that swimming in Hong Kong is dangerous