Professor Li preferred lectures to his students to to meetings on scientific developments.
A. to give; invite
B. to give; be invited
C. giving; being invited
D. giving; inviting
网友回答
A. to give; invite
B. to give; be invited
(答案→)C. giving; being invited
D. giving; inviting
解析：考查词组;prefer doing to doing，因为Professor Li和invite是被动关系，第二空用动名词的被动式，句意是：李教授宁愿给学生做演讲也不愿被邀请参加科学发展的会议。选C。