【题目】From his ________ look, we could see that the professor hadn't expected that we could raise such ________ questions to him.
A.confusing; confusing
B.confused; confused
C.confusing; confused
D.confused; confusing

【答案】D
【解析】句意：从他困惑的表情，我们能看出那位教授并没有想到我们会提出如此令人困惑的问题。confusing令人困惑的；confused感到困惑的。故选D。