Each summer，you hear news that some sports players are sent to hospitals because it is too hot. Our bodies can't be outside in the sun for a long time. So in hot summers，be careful about playing sports outside.

    Firstly，to play sports safely in hot weather，you must drink water. Sports drinks are great for athletes，but they have so much sugar that they'll dehydrate（使脱水）you more. However，drinking a few bottles of sports drinks will be good for you.

    Secondly，be sure to take enough breaks to let your body rest. If your coach doesn't let you take enough breaks in the heat，don't wait until you feel uncomfortable. Just be honest with your coach when you need breaks.

    Thirdly，when you have a break，don't sit in the sun. With the sun beating down on you，you'll only heat up and sweat（冒汗）more. Take a seat under a tree，or even better，go indoors for a little while. Cooling yourself down can help you stay active longer.

    Fourthly，remember that the earlier in the day you start your exercise，the cooler it will be. If you can start practice before the sun comes up，you have a few good hours to practise in the cool hours of the morning. Also，the earlier you practise，the earlier you can finish the exercise. If you need more practice time，come back to the field later in the evening，when the sun is setting.

    Last but not least，you should watch what you eat. Eat food which is high in water，starch（淀粉）and carbonhydrate（糖类），but be sure to get a good balance in your diet.

    As long as you pay attention to the above，playing sports safely in the heat isn't a difficult thing.

读香港和祖国内地的优势互补图，回答下题．

客中闻雁

黄仲则

山明落日水明沙，寂寞秋城感物华。

独上高楼惨无语，忽闻孤雁竟思家。

和霜欲起千村杵，带月如听绝漠笳。

我亦稻粱愁岁暮，年年星鬓为伊加。