工作人员对330kV高压设备进行验电时，人体与被验电设备的距离不应小于（）。

A.2m

B.3m

C.4m

D.5m

I _______ in London for many years, but I’ve never regretted my final decision to move back to China.

A．lived

B．was living　

C．have lived

D．had lived