解析：

听力原文：
M: Hello.
W: Hi, Tom. This is Diana from the creative writing class.
M: Oh, hi, Diana. What's up?
W: Well, I have a new project which I thought you might be interested in. I'm setting up a writer's group, you know, a support group for people who are trying to get published.
M: Well, how would it work?
W: We get together once a week. I've already arranged for a meeting room in the library, and then we share what we were working on and offer each other some advice.
M: I could use some advice. I'm working on a short story that I'd like to get published in the Campus Literature Review. You've done that, haven't you? Didn't I see a poem of yours in the last issue?
W: Yes, I was so excited to finally see my work in print. It was presented three times. You just have to keep trying if they turn you down.
M: Well, I'm sure the group could help me, but I don't know how much I can contribute. I'm just starting out.
W: That's OK. I know from your comments in class that you will be a valuable member. We will get someone more experienced to help us, too.
M: Sounds great. You can definitely count me in.
答案解析：
(1) 正确答案为C。根据a support group for people who are trying to get published. 这是一个为想发表文章的人们提供帮助的小组。可知，黛安娜的新企划是一个帮助他人发表文章的小组，因此C项正确。
(2) 正确答案为A。根据You just have to keep trying if they turn you down.他们要是拒绝你，你就一直尝试。可知，黛安娜给汤姆的建议是，如果他的文章被拒绝，要一直不断尝试，因此A项正确。
(3) 正确答案为C。根据男子说，I'm sure the group could help me我确定这个小组会帮助我，以及女子说We will get someone more experienced to help us, too.我们会请一些经验丰富的人来帮助我们，可知，汤姆同意加入这个小组的原因是他会从其他成员那里得到帮助和建议，因此C项正确。