固定桥粘固后引起龈炎，其原因不是（）。

A.粘结剂未去净

B.固定桥压迫龈组织

C.接触点不正确

D.固定桥边缘不密合

E.早接触

As a matter of fact, novels are often ______ for the stage, television and radio．

A．adopted

B．adapted

C．attached

D．absorbed