---Your accent is great. You sound like an American native.

--- ________. I still have trouble expressing myself.

A．Yes, you are right.

B．I don’t care

C．Well, not really

D．I’m glad you like it.

与cdma2000相比，下列哪个是1xEV-DO所采用的技术：（）

A.高阶调整

B.时分调整

C.快速小区选择

D.以上都是