21、Sports may be fun，but you need to play them safely．

Here are some tips to help you stay safe while you're playing sports in winter．

Get your body ready!

Before you do exercise，be sure to warm up for at least five minutes．During warming up you should stretch（伸展）all parts of your body．

Wear the right clothes!

Be sure to wear the right clothes for sports．

If you play winter sports，make sure that you dress warmly．Also make sure to use suntan oil（防晒油）．It may be cold，but the sun is still bright! If you don't put on suntan oil，your skin maybe hurt．

If you go skiing，be sure to wear waterproof（防水的）trousers and gloves．

If you go running in cold weather，try to wear a scarf．It will keep your face，ears and neck warm．

Stop playing sports when you are hurt!

lf you get hurt when playing sports，don't play again until you get well．

Don't get thirsty!

Drink a lot when playing sports because it is easy to become thirsty．

1．At least how many minutes should you warm up before you do any exercise?

A．Five．                 B．Ten．                  C．Fifteen．                D．Twenty．

2．In the passage，the writer tells us ________．

A．to have a good rest before playing sports              B．to keep warm for sports in winter

C．to eat a lot before playing sports                   D．to drink a little when we play spots

3．Two kinds of sports are mentioned in the passage．What are they?

A．Running and skating．                             B．Swimming and running．

C．Skiing and running．                                  D．Skiing and skating．

4．Which of the following is NOT true according to the passage?

A．You should wear waterproof trousers when skiing．

B．If you get hurt，you should never play sports again．

C．You should use suntan oil even if you play winter sports．

D．You'd better wear a scarf when you run in cold weather．

5．Which is the best title of the passage?

A．Playing sports is fun

B．Playing sports in summer

C．What we should wear when playing sports

D．Keeping safe when playing sports in winter