听短文,根据短文内容,填入所缺的单词。短文念三遍。 As we know, food gives us 1 .We must have enough food to keep us 2 . Of course, we must also have the right kinds of food. We should eat more fruit and vegetables but 3 meat. If we eat too little or too much food, or if we 4 the wrong food, it can make us 5 .