阅读理解。 The Key to Your Health A car needs gas to run and your body also needs food to work for you. Eating the right kind of food is very important. It can keep your body grow strong to take care of what you eat. There are four main food groups altogether. The dairy group has food like milk, cheese and sour milk. The other three groups are the meat and fish group, the fruit and vegetable group, and the bread and rice group. Each meal should have at least one food from all four main groups.  With all these food together, you will be given enough energy during the day. It is easy to get into bad eating habits. You may eat your breakfast in a hurry to get to school on time.  Or you may not have time for a good lunch. It may seem easy to.  But you will find yourself tired in these days and you can not think quickly. Watching what you eat will help your body remain healthy and strong. It is also good to take some exercise. It will help you eat more if you take a walk or play games in the open air.  Having a good eating habit with some exercise is the key to your health. 1. Which of the following diets do you think is the best one? A. Corn,fish,cream and pork. B. Eggs,tomatoes and chicken. C. Milk,bread,cabbages and beef. D. Rice,beancurd,pork,fish and chicken. 2. Which of the following is a good eating habit? A. Going to school without any breakfast. B. Finishing your lunch in a very short time. C. Eating fish and chips for supper all the time. D. Having at least one food from all four groups in each meal. 4. In this passage the writer mainly tells us that ____. A. right kind of food with exercise will keep you healthy B. taking exercise can keep your body strong C. every person needs food to grow well D. enough energy helps people think more quickly 4. The underlined word ' dairy' in the second paragraph means ____ . A. the shop that sells milk and butter B. the food made out of cows such as milk and butter C. a farm where cows are kept D. a place where milk products are made 5. Which of the following is TRUE? A. It is easy to get into bad eating habits. B. There are three main food groups altogether. C. We needn't take some exercise. D. It will help you eat less if you take a walk in the open air.