欧洲第一长河，被俄罗斯称为“母亲河”，这条河是

A．莱茵河

B．多瑙河

C．伏尔加河

D．易北河

The doctor advised Versa strongly that she should take a holiday,but ______ didn’t help.

A．it

B．she

C．which

D．he