1. What do we know about this unusual class?
A. The teachers did lots of writing on the board.
B. The teachers were invited to attend several lectures.
C. The students were professors from a university.
D. The students were studying science and humanities.
[解析] 细节理解题。根据“This was no ordinary class.The students who came together were all science or engineering professors at Cornell University”可知C项正确。
[答案] C
