下列哪条对全冠龈边缘位置设计无影响
A．同位力大小
B．美观因素
C．牙龈的保护
D．边缘密合
E．牙体预备操作的难易
参考答案：D
五硬
— How come a simple meal like this costs so much?
— We have ______ in your bill the cost of the cup you broke just now. [ ]
A. added
B. included
C. contained
D. charged
