以下哪项措施可防治局麻药的毒性（）

A.局麻药剂量越大，效果越好

B.在局麻药溶液中不加用肾上腺素

C.用非抑制量的巴比妥类药物（1～2mg/kg）作为麻醉前用药

D.局麻药浓度越高，效果越好

E.警惕毒性反应的先驱症状

The chairman asked me to ________the report, because he didn't want to speak for too long at this meeting.

A．cut out

B． cut in

C．cut off

D．cut down