问题详情：
Every person needs water and a diet of healthy foods. These foods should ____21___ some fat, some fiber, a little salt and so on.
People need energy __22__ . They eat different kinds of food which change into energy. The energy is___23__ in calories. Even when you __24__, you are using energy - about 65 calories an hour. __25__you are at school, or walking home, your body is Burning up 100 calories an hour. When playing football or basketball, you __26__be using 400 calories an hour. ____27____ Sports Day, during the relay race, you will use most of all, __28__as much as 650 calories an hour.
The Chinese diet is considered to be the healthiest in the world. It contains a lot of fruit and green vegetables. It is __29__in fiber and low in sugar and fat. The Chinese eat ___30___ sugar than many other countries in the world. That is __31__lots of people in China have healthy white teeth.
People in the Western world do not eat such healthy foods. They eat __32__fat and sugar and don’t take enough __33__. Because of this, they __34__weight very easily. Their diet contains a lot of fat in the __35__of potato crisps, potato chips, butter, cream and chocolate. They eat a lot of sugar ___36___ exists in cakes, soft drinks,__37__and so on.
The result is that many of them become fat.__38__ some have bad teeth. In some parts of Britain, one person in ten, __39__the age of thirty, has had no teeth ___40___.
21. A. include B. contain C. keep D. gain
22. A. for life B. to live C. to live in D. for a living
23. A. measuring B. taken C. measured D. measure
24. A. are asleep B. fall asleep C. go to sleep D. go to bed
25. A. While B. During C. Although D. If
26. A. must B. can’t C. need D. might
27. A. At B. On C. In D. With
28. A. surely B. usually C. perhaps D. hardly
29. A. rich B. poor C. good D. bad
30. A. more B. larger C. less D. smaller
31. A. how B. why C. what D. that
32. A. much too B. many too C. too many D. too much
33. A. exercises B. food C. work D. exercise
34. A. put on B. gain on C. get on D. put up
35. A. type B. form C. kind D. sort
36. A. what B. which C. as D. whose
37. A. sweets B. sweet C. candy bar D. sweet thing
38. A. But B. Or C. And D. So
39. A. at B. for C. with D. by
40. A. left B. leave C. leaving D. to leave
【回答】
BBCAA DBCAC BDDAB BACDA
知识点：健康保健类
题型：完型填空
