（）是指当团体中的被保险人不再成为这个团体的成员或被保险人时，保险人将给予这个或这些被保险人一定的权利，购买个人医疗费用保险而不要求被保险人的可保性证明。

A.转化条款

B.调整保险金条款

C.事先存在条件或等待期或观察期条款

D.重大疾病条款

根据上下文，补全对话中所缺的单词，每空一词。

A: Hi, Mike. Let's go to school. Oh, what's 1.             with your right arm?

B: I had bad 2.             yesterday evening. A small boy ran out while I was riding on my bike. I tried not

    to knock him, but I fell and hurt 3.              .

A: What a pity! Is it serious?

B: Not very. But I can't write now. The 4.             asked me to stay at home for a few days. Could you

    get my sick-leave note to Miss Li?

A: Sure. I hope you'll be all 5.             soon.

B: Thanks, Linda. Here is the note.