问题
选择题
The visiting professor giving lectures to students invited to meetings at times.
A．preferred; to being
B．preferred to; rather than
C．preferred; than being
D．preferred; than to being
答案
答案：A
题目分析：考查prefer用法。固定词组prefer doing A to doing B宁愿做A不做B；句意：这位访问教授宁愿给学生上课也不愿意时而不时被邀请来参加会议。根据句意第二空使用动名词的被动形式。故A正确。
点评：固定词组prefer doing A to doing B宁愿做A不做B；