根据下表提供的数据，写一篇说明文，简述过去几年来某地区人们饮食结构的变化，以及这些变化带来的益处。
Changes in People’s Diet
year
food
1998
1999
2000
2001
Grain
45%
44%
43%
40%
Meat
23%
21%
20%
18%
Fruit&vegetable
20%
22%
23%
26%
Milk
12%
13%
14%
16%
Total
100%
100%
100%
100%
This table shows the changes in people’s diet in the past four years. We can see that the amount of grain and meat people eat fell slightly year by year. It means that people now eat less staple food than before. Instead, people spend more on milk, fruits and vegetables.
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(答案→)This table shows the changes in people’s diet in the past four years. We can see that the amount of grain and meat people eat fell slightly year by year. It means that people now eat less staple food than before. Instead, people spend more on milk, fruits and vegetables.
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