哪些食物是健康的(英语)

可以用食物金字塔来表示。
Food Guide Pyramid is one way for people to understand how to eat healthy. A rainbow of colored, vertical stripes represents the five food groups plus fats and oils. Here's what the colors stand for:

* orange - grains
* green - vegetables
* red - fruits
* yellow - fats and oils
* blue - milk and dairy products
* purple - meat, beans, fish, and nuts

The U.S. Department of Agriculture (USDA)美国农业部

medicine