（）是目前技术转移中最受关注和最为重要的方式。

A. Jack failed in the exam for the first time.
B. Jack was a very good basketball player.
C. Jack paid no attention to his study before the exam.
D. Jack played basketball after the exam.

A. I'd try it.
B. I think so.
C. I feel nervous.
D. I'd love to.