A：x≠2，x≠1
B：x≥0
C：x＞0
D：x≥0且x≠2
将下列问句答句连线。
①What's this?____ A. Yes, I do.
②Is this a bear? ____ B. It's a bee.
③What do you see?____ C. No, it isn't.
④Do you see a monkey?____ D. I see a frog.
我国二千多年土地私有制被彻底废除是在（ ）
