— You don't seem to be quite yourself today. What's wrong?

— Oh, I'm suffering from a cold. Nothing serious, _____.  [ ]

A. yet          

B. indeed          

C. though    

D. anyway

患者男性，56岁，因急性根尖脓肿致左下颌骨急性中央性颌骨骨髓炎。查：左下后牙Ⅲ度松动，牙周溢脓，其治疗方案中不正确的是（）

A.及早拔除病灶牙及相邻的松动牙

B.全身足量应用抗生素

C.局部行超短波理疗

D.形成黏膜下脓肿时应及时切开

E.引流不畅时可去除部分骨