18. A) The man shouldn’t hesitate to take the course.
B) The man should talk with the professor first.
C) The course isn’t open to undergraduates.
D) The course will require a lot of reading.
答案：
18. A) The man shouldn’t hesitate to take the course
原文：
18. M: Have you heard of Professor Smith? I’m thinking of taking an advanced engineering course with him. What do you think?
W: Yeah! You really should. He’s published dozens of books so far. One has been recommended as a textbook for postgraduates.
Q: What does the woman imply?