阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项。①In most places in the world today, it is easy to find healthy food. With supermarkets, buying healthy food like fresh fruits, vegetables, fish, and meat is easy and convenient（便利的）. However, it is also easy to find unhealthy food today. Supermarkets and other stores sell good food, but they also sell frozen foods and junk food like chips, candy, and cookies. A lot of food today has chemicals（化学药品）. Research has shown that many of these chemicals are bad for our health. So did people in the past eat healthier than we do today?
②A century ago, people didn't eat junk food or frozen food. Instead, they ate natural foods without chemicals. On the other hand, their natural foods were not always as good as food today. In the past, meat often came from sick animals. It's not healthy to eat meat from a sick animal. In most places today, laws make sure that food is safe.
③In most countries today, we can buy a variety（各种）of foods. We can buy oranges in the winter and apples in the summer. Healthy fruits and vegetables are available（可获得的）at any time of year. These foods come from all over the world. In the past, this kind of variety was not possible. People could eat certain foods only in certain seasons.
④We also eat much more meat, sugar, fattening foods, and chemicals today than people did a century ago. Studies show that these things can cause（引起）heart disease（疾病）and a variety of other health problems. However, people live much longer now. Today, the average（平均）person lives for 70 to 80 years. However,100 years ago, the average person lived for only about 50 years. People live longer because we have better medicine now. But people also have longer lives because healthy food is usually available.
⑤So ____? Yes and no. People in the past did eat more natural food than we do now. But, in some ways, we also eat better today. We can eat healthier today than people did in the past. We just have to choose to eat good foods.
