Every day, we have _____ food, so many of us lose health.[ ]

A. much too    

B. too many    

C. too much

对结核杆菌有效，但会引起肾损害的药物是（）

A.庆大霉素

B.链霉素

C.万古霉素

D.四环素

E.氯霉素