A、A chemistry assignment. B、A study their chemistry professor did. C、A course the woman is taking. D、A job possibility. D主旨大意题。女

M: Hi, Mary. Do you want to start writing a lab report after we finish this experiment?
W: I can’t. In fact I need to finish early because [19]I’m going over to the psychology department to talk to Professor Smith about a .job opening.
M: You mean a job on campus?
W: Yeah. And it sounds pretty interesting. It involves helping with your study on learning style. You know, about how some people learn best by sight, while others learn best by hearing or touch.
M: Yeah. I know that’s an area of expertise.
W: Right. Anyway for her study she’s taking some high school students who aren’t doing very well in their classes and testing them to find out what their learning styles are. Then tutors, people like me, will work with them presenting material to them in their particular learning style.
M: Hey. That is interesting. Now will you mostly do the testing or the tutoring?
W: Both I hope. I want to be involved from start to finish.
M: Are you getting paid for this?
W: I’m sure we’ll get something though, probably not much. Anyway it doesn’t matter to me. I just want to have some hands-on experience.
M: Yeah. And it’ll be nice to help those high school students too.
W: That’s what I thought when I saw the ad. You know you could do it too. You don’t have to be in her classes to work on the study.
M: Really?
W: Yes.
M: That’s perfect for me.
W: Then come along. We will save the lab report for later. But we’d better make sure we do a good job on our experiment first.
M: Yeah. First things first.
19. What are the speakers mainly discussing?
20. Why is the woman interested in working with Professor Smith?
21. What will the speakers probably do next?