属于限期手术的是 A．低渗性脱水 B．高渗性缺水 C．等渗性缺水 D．高血钾 E．低

补全对话： 根据所给对话，从方框中选出一个能填入空白处的最佳选项。（10分）

A. When and where will we meet? B. Why do you think so? C. This is Li Lei. D. What are you doing? E. Would you like to come with us?

A: Hello! May I speak to David, please?
B: This is David speaking. Who’s that?
A:   小题1: 
B: Hello, Li Lei.    小题2: 
A: I’m doing my homework.
B: I think you are learning physics.
A: Yes. You’re right.  小题3:
B: Because physics is your favorite subject.
A: David, we want to play soccer this afternoon.   小题4:
B: Yes, I’d love to.   小题5:
A: We want to meet on the playground at 1:00 p. m. See you then. Bye.
B: Bye-bye.