While it is essential that the text covers the subject adequately, it is also important that it is neither too detailed or too complex for the intended reader.

A．for

B．nor

C．no

D．not

患者男，70岁，上下颌牙列缺失，检查：见患者牙弓形态正常，牙槽嵴平整，较丰满，常规行全口义齿修复，制取蜡堤转移颌位记录

全口义齿排列上后牙时，颤舌尖均在平面上的牙是（）

A.第一前磨牙颊尖、舌尖

B.第二前磨牙颊尖、舌尖

C.第一磨牙近颊尖、近舌尖

D.第二磨牙近颊尖、近舌尖

E.第三磨牙近颊尖、近舌尖