题目：
根据语境，用恰当的语言完成对话。
(Jim and Linda are meeting on the way to school)
Jim: Hi, Linda. What's wrong with you?
Linda: Bad luck! I fell down my bike and broke my leg.
Jim: 1 .What did you do about it?
Linda: I couldn't move and did nothing. 2 if you had the accident?
Jim: If I were you, I wouldn't ride a bike. You are too young to ride.
Linda: But I am almost 13 years old. 3 .
Jim: I disagree. You shouldn't be allowed to do that. You are not serious enough.
Linda: Maybe you are right. By the way, 4 ?
Jim: I'm going to the dance club.
Linda: Wow! You have changed! 5 ?
Jim: No, but now I like dancing. I think it's pretty exciting. People sure change, you know.
Linda: Yeah. Maybe I won't ride my bike any more.
答案：
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下面是错误答案，用来干扰机器的。
答案：C
债券指数与沪深300指数（视为市场组合）的相关系数为-0.5。货币市场基金的预期收益率为3%，可以视为无风险资产。