[解析]
During the summer you should be even more careful than usual because food goes bad,faster in hot weather than in cold weather. When you buy frozen and refrigerated foods, Don't make long stops on your way home, Because frozen foods could become soft or warm. Using bags helps keep food cold Until you can get home. Milk and milk products should be refrigerated immediately When camping or picnicking or at any time when refrigeration can't be made use of Use special dry foods. Don't leave food in a hot car. Picnic favorites like meat,chicken and eggs Should be kept in a cooler box. Above all,if the food doesn't seem to be normal in smell or appearance, Throw it away immediately. Don't taste it.