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Unit 2 Healthy eating 1、 diet n. 根据语境猜词义 (1) She is on a diet in order to lose weight. (2) It's important to have a balanced, healthy diet. 根据语义找匹配 A. 日常饮食 B. (病人或减肥者的)特种食品 (1) B (2)A be / go on a diet 节食 put sb. on diet 让某人节食 a balanced diet 均衡饮食 diet/food diet 特指维系健康的定量或定质的食品，常用于病人、减肥者等的食物。是可数名词。 They are seeking the most reasonable diet which will do good to their health. food 是一般用法。指能维系生命的、能充饥的、能吃能喝的东西。作为食物，是不可数名词；作为食物种类，是可数名词。 We must have food to eat and clothes to wear. The children jumped with joy at sight of all kinds of foods on the table. 用food/diet填空 The sick man must not go without (1) food， but he must have a (2) diet without sugar. 2、 energy n. 根据语境猜词义 (1)It's important and necessary to try to save energy. (2)Young people usually have more energy than the old. | 
