15．What is abalanced（平衡） diet？

分析 什么是平衡飲食？

解答 答案是balanced．本題考查語境中選用恰當?shù)脑~的適當形式．balance n．/vt．平衡；balanced平衡的； a balanced diet平衡飲食，故答案是balanced．

點評 單詞填空必須在對語境整體理解的基礎上抓住指向答案的關鍵線索、固定句型或搭配等，同時注意所選詞的形式變化．

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