A、Putting up posters for her works. B、Attending an art class. C、Decorating her dorm room. D、Organizing a global tour. C选项均以现在分词开

M: I see you and your friends have been decorating the dormitory.
W: The walls looked so dull; we decided to cover them with prints and posters.
M: I like this one. Did you buy it on campus?
W: No, I bought it at the Museum of Modern Art in New York City. The Art History Department recently sponsored a special museum tour there.
M: Is this a reproduction of something in the museum’s collection?
W: Yes, it’s a print of a painting by Georgia O’keffe called Lake George Window.
M: It looks more like a photograph. The details are so accurate and realistic.
W: I thought the same thing when I first saw the painting hanging in the museum. But the art history teacher pointed out how the painting is in fact very stylized.
M: What do you mean?
W: First, by choosing a front view of the window, O’keffe was able to present a symmetrical image and eliminate any hint of three-dimensionality.
M: It does look almost flat. The open shutters seem to have no depth at all.
W: To emphasize that two-dimensional look, O’keffe also eliminated details of texture. The shutters, for example.
M: Yes, their surface looks as flat as the glass of the window pane.
W: So even though she created a realistic painting of a window, O’keffe stylized and simplified the shapes to resemble an abstract design.
M: It sounds as though you learned a lot on that trip. Is the Art History Department planning another museum tour?
W: Yes, the next one is to a special exhibit of European painters at the Museum of Fine Arts in Boston next week.
M: I think I will sign up for that one.
Questions 19 to 22 are based on the conversation you have just heard.
19. What has the woman been doing?
20. What is the characteristic of Georgia O’keffe’s work?
21. How did the woman benefit from the museum tour?
22. What might the man do next week?