以下不属于按相生规律确定的治法是（）
A.培土生金
B.益火补土
C.泻南补北
D.滋水涵木
E.金水相生
参考答案：C
____ not only he but also his friends been to New York? [ ]
A. Does
B. Do
C. Has
D. Have
A．通电导体的周围存在着磁场
B．通电导体在磁场里受到力的作用
C．电磁铁通电后，会吸引铁片
D．电磁感应
