抗结核药中抗菌谱窄的药物是
A.异烟肼B.对氨基水杨酸C.利福喷丁D.利福平E.乙胺丁醇
参考答案:A
解析:异烟肼对结核杆菌有高度选择性.对其他细菌无作用。
______ the same story many times, my little brother can now tell it himself.
A.Telling
B.Having told
C.Being told
D.Having been told
验收工作的基本要求是什么?