It’s imperative that a graduate student maintains an average grade of “A” in his major subjects. A: 正确 B: 错误

Some faculty decided to do more than ___about rising student cheating. A: talk B: to talk C: talked

- What’s your major?- _______ A: I take a course in literature. B: I’m interested in medicine. C: I’m thinking of taking the linguistics course. D: I take world history as my major.

Student: Professor Lance, your lecture on cloning is very interesting! Professor: ______ Are you a student of biology Student: No. I major in chemistry. A: I think so B: I"m glad to hear that C: It must be D: It"s not so interesting

Determine<br/>whether the following argument is valid or not. “Every computer<br/>science major takes discrete mathematics. Natasha is taking discrete<br/>mathematics. Therefore, Natasha is a computer science major.” ( ) A: valid B: invalid