She is very dear to us.We have been prepared to do ________ it takes to save her life.

A．whichever

B．however

C．whatever

D．whoever

在我国的基本经济制度中，必须坚持公有制的主体地位，是因为

A．我国现阶段生产力发展水平不平衡

B．它是实现最广大人民根本利益和共同富裕的根本保证

C．国有资产在社会总资产中占优势

D．公有资产在各行各业中都占优势