, and we each can have one.

A．A few more books

B．Giving us a few more books

C．To give us a few more books

D．Given us a few more books

目前临床上最常采用的牙种植体为

A．骨内种植体
B．骨膜下种植体
C．粘膜下种植体
D．牙内骨内种植体
E．以上都不是