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 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．Do not stay in the water too long．

  4．Never get out of 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．

1．There are ___________ public beaches in Hong Kong．

       A．forty                                                         B．less than forty

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

2．We can reach ___________ by bus．

       A．all the public beaches                    B．any public beaches

       C．only a few public beaches              D．all the public beaches except some

3．When you see a blue flag，you know that ___________ there．

       A．women should not swim                             B．children should not swim

       C．nobody should swim                                   D．anybody can swim

4．Which of the following is true according t this passage? ___________．

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

       B．You should not swim with other people

       C．You should not swim after lunch

       D．You can’t swim for a short time