—Have you heard that Tom was given a good beating by his father last night?

—He _____ it. He was making trouble everywhere all the time.

A．made

B．got

C．gained

D．deserved

判断牙龈炎症程度的指标为（）。

A.观察牙龈颜色

B.牙周附着水平

C.测量龈沟液量

D.探测龈沟深度

E.探诊有无出血