在光合放氧反应中不可缺少的元素是（）和（）。

从方框中选择正确选项．并将其字母序号写在对话后面的空格内。(方框
中有一个选项与对话内容无关)

A．Why do you want Io be a basketball player? B．Think it over! C．No．I don’t want to talk with them． D．But it’s not everything． E．Do you have a plan for the future? F． Yes．many times．

Celia: Hi Tony! You look upset. What’s wrong?
Tony: I failed the exam again. I’m afraid I have to give up my study.
Celia: No, never. If you do that, you will let your parents down.       1   
Tony: Yes. I want to practice basketball and become a basketball player like Yao Ming or Kobe.
Celia:      2    
Tony: Because it’ s my dream job. If I am famous, I can make lots of money.
Celia: Money is important.        3    
Tony: I know. But I want to hold on to my dream.
Celia: Have you ever talked with your parents?
Tony:      4       But they don’t agree. They want me to be a doctor.
Celia: I think you’d better take your parents’ advice.
Tony: Maybe you’re right. But why can’t 1 make my own decisions?
Celia: Come on, Tony.        5       After all, your parents have more experience.
Tony: Anyway, I’ll think about it. Thanks for your advice.