情景对话。

A: Look at the photo! Who's 1. _____ woman?  

B: 2. _____ is my mother.

A: Who's that man?

B: 3. _____ is my father.

A: And 4. _____that your brother?

B: Yes, 5. _____is.

A: What's 6. _____name?

B: His name is Jack.

A: How do you 7. _____it?

B: J-A-C-K, Jack.

A: How old is 8. _____?

B: He is eight.

A: Who's that?

B: Oh, she is my sister.  9. _____ 10_____is Mary.

秦岭淮河是我国重要的地理分界线，下列不是以秦岭淮河为分界线的是[ ]

A．暖温带和亚热带

B．半湿润和半干旱区

C．旱田和水田

D．冬季河流有无封冻