While I was making the model plane，my little nephew kept asking me questions with great

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A. wonder
B. patience
C. doubt
(答案→)D. curiosity
解析：句意为：当我制作模型飞机的时候，我的小侄子怀着好奇的心情不停的问我问题。wonder n 惊奇，奇迹；patience n 耐心；doubt n 怀疑，疑问；curiosity n 好奇心，好奇。所以答案应为D。