It’s very import for us to keep health .in our everyday life. Here is some ____  for you._____ , you should have healthy diet. Different food helps ____ in different____.
   You should eat more fruits and vegetables instead of hamburgers, Beijing roast duck and so on. If you choose the right food, you can have healthy____  habits. Second, ____ exercise is good for your health. For example, climbing mountains, riding bikes or____ . Third, you should ____  at last eight hours a day and you shouldn’t work or study too ____ . Finally, remember that smoking is bad for your health, so don’t smoke, you will become much____ .

下列有关我国朝代的特色，叙述不正确的是（    ）