趣味英語。
Three years ago，Helen was 156 cm，and Nancy was 4 cm shorter than her.Now Helen is 3 cm taller than three years ago，but Nancy is 2 cm taller than her.Nancy is 161161cm tall now.She is 99cm taller than three years ago.
【考點】數字運算．
【答案】161；9
【解答】
【點評】
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發布：2024/8/7 8:0:9組卷：1引用：1難度：0.5
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