---- How does your father usually go to work?

---- He _____drive a car, but now he _____ there to lose weight.

A．used to; is used to walk

B．was used to; is used to walking

C．was used to; is used to walk

D．used to; is used to walking

电压为1K√及以上电动机的绝缘电阻在接近运行温度时，定子绕组绝缘电阻在接近运行温度时，定子绕组绝缘电阻（）

A、每千伏不应高于1兆欧

B、每千伏不应低于1兆欧

C、每千伏不应高于0.5兆欧

D、每千伏不应低于0.5兆欧