The little child didn’t understand the question so there was a expression on his face.A.

网友回答

(答案→)A. puzzling, puzzled
B. puzzle, puzzled
C. Puzzling, puzzling
D. puzzled, puzzling
解析：考查形容词辨析。句意：那个孩子不理解这道令人迷惑不解的问题，因此他一脸的困惑。puzzle为及物动词，宾语一般是人，puzzled感到迷惑的，困惑的，茫然的；搞糊涂的；puzzling令人迷惑的，puzzled可修饰表示表情、声音等一类的名词。如：Philip looked upon him with puzzled surprise.菲利浦对他十分困惑不解。故选A。