The new couple spent some money for the________ of the furniture necessary for their new house.[ ]

A. distribution  

B. manufacture

C. donation  

D. purchase

X线片不显影的结石有（）

A.胱氨酸结石

B.尿酸结石

C.磷酸钙结石

D.碳酸磷灰石

E.黄嘌呤结石