Americans eat ____ vegetables per person today as they did in 1910. [ ]

A. more than twice

B. as twice as many

C. twice as many as

D. more than twice as many

重建价格是采用与估价对象建筑物相同的建筑材料、建筑构配件、建筑设备和建筑技术等，在估价时点时的（）下，重新建造与估价对象建筑物相同的全新建筑物所必需的支出和应获得的利润。

A.国家财税制度

B.市场状态

C.供求状况

D.市场价格体系