单选题 I am ______ by his ______ attitude after hearing his words.
[A] puzzled; puzzled [B] puzzling; puzzling
[C] puzzled; puzzling [D] puzzling; puzzled

【正确答案】 C
【答案解析】[精解] 本题考查puzzled和puzzling的区别。puzzled常用来修饰人，指人的内心感觉“感到困惑不解的”；puzzling常用来修饰事物，指事物的性质“令人困惑的”。