阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。

    Do you know many students aren't healthy today?

    Now many students know sports are good for 1 health. But they don't like 2. Some of them only watch them 3 TV. What's more, many of them 4 like watching TV and playing computer games. They often 5, “Play football? Oh, it sounds 6. Play basketball? Oh it 7 difficult.”

    And many boys and girls don't like 8. They don't have carrots for 9 and they don't have broccoli (西兰花)for dinner. But vegetables and fruit are 10 food. 11 need to eat lots of them every day. 12 they like junk food(垃圾食品). They like eating French fries, hamburgers and 13.

    So if you want to 14 healthy, eat vegetables and 15 sports every day!