补全对话。

Anna: ____.

John: ____. Can I have a look?

Anna: ____. Here you are.

John: ____.

Anna: ____.

John: You are welcome.

A. Sure!

B. I have a nice cat.

C. Oh, really?

D. Thank you.

E. Oh! It's nice. I like it.

与我国种植业区与非种植业区的分界线大致一致的是（      ）

两只电阻，甲标有“10Ω，1A“，乙标有“15Ω，0.6A“，把它们串联在电路，允许接在最大电压为____ V的电路中．