听力原文：M: I have a special guest today, Shirley. Shirley, you truly have an amazing garden. Could you [et us know how you put this together？
W: Tills spring I took a square-foot gardening class, and I decided to try some of the things I've learned. Urn, one of the most important things in square-foot gardening is that you choose a good location. You need at least 6 to 8 hours of direct sunshine. You also need to choose a location that has good drainage, and it should be a convenient location. A garden is a lot more fun if yon are walking by and seeing it all the time. Urn, you need to decide what kind of containers you want, or, in my case, I used wooden boxes.
M: Wall, Shirley, I've noticed these vertical beams. I've never seen that before. Could you explain that to us a little bit？
W: Right here we have some cantaloupe, and cantaloupe take a lot of space when you grow them out on the ground, and I don't have that much space, so I just grow them up. I just made a metal frame, and took some string. I just allow them to grow up, and they will support themselves.
M: This is amazing. I noticed in this garden, there is u vast amount of vegetation.
W: Well, over on the far end, I have tomatoes growing vertically. In front of those I have green peppers, basil, strawberries, beets, green beans, com, carrots and so on. Right here, as I said before, I have cantaloupe. Down at the bottom, I have some Mexican tomatoes. And down at this end, I have eggplant, another kind of pepper called banana peppers, cucumbers, okra, pumpkins...and I think that's about it.
M: I'm so impressed. I'd like to thank you very much for having us in today to look at your garden.
(23)

A. By attending a class.
B. From her parents.
C. Through a gardening magazine.
D. From her neighbors.