In 2008, the United States Department of Agriculture (USDA) wanted to know if all the school lunches served to students were healthy. The answer was a big, fat NO!The USDA found that most American schools served lunches with too much fat and salt. They also found that most of the fruits and vegetables in the lunches came from cans（罐头） Canned fruits and vegetables are not as good as fresh ones.The USDA gives schools food and money to make lunches. But schools make up their own menus. Some make healthy lunches. Most do not. Now the USDA wants all schools to serve more healthy lunches. They want schools to follow the USDA's guidelines for balanced（均衡）meals.Mike Sanders, in charge of the USDA in 2008, said the USDA should teach school workers how to make healthier lunches. "A good school lunch is just as important as a good textbook," Sanders said. He said that children also need to learn about healthy foods.The USDA is working on a new program—Fresh Start. It will give schools more fresh fruits and vegetables. Fresh Start will also help schools change their lunches to make them healthier. To find the best way to change lunches, the USDA held meetings with parents, school leaders, doctors, and cooks.Children already eat healthy lunches at Chief Joseph School in North Saratoga, Oregon. They have whole-wheat bread with low-fat cheese, and low-fat milk.What are schools required to do to make the lunches healthy?
A、Provide balanced meals.
B、Make up new guidelines.
C、Design their own menus.
D、Cook with more vegetables.
【正确答案】：A
【题目解析】：本题为细节题。题干问：USDA要求学校做什么样的健康午餐？该题可以从文章第三段最后一句得出答案：They want schools to follow the USDA’s guidelines for balanced meals.他们想让学校按农业部的指导提供均衡饮食。所以答案为A。
