单选题 He gradually ______ that his wife was right and he had to change his way of living.
A. explored B. repelled C. simplified D.perceived

【正确答案】 D
【答案解析】perceive觉得，意识到。句意：他逐渐意识到他妻子说得对，他必须改变自己的生活方式。A．explore探索，钻研；B．repel击退，抵制；C．simplify简化。