—Hello! Could I speak to Lily?
—Sorry, she is not in. She __________ Shanghai.
A:have been to
B:have gone to
C:has been to
D:has gone to
方程x=x(x﹣1)的根是( )
英国人杜麦思在《中国札记》一书中,以近乎狂热的态度呼吁建立起一种向全体英国臣民开放的竞争性的制度,从而提高英国行政官员的水平,并促进大英帝国的团结。杜麦思的呼吁是有感于中国