肺炎球菌肺炎抗菌治疗首选()
A.链霉素
B.氧氟沙星
C.青霉素
D.丁胺卡那
E.红霉素
参考答案:C
常温用水稀释0.1mol/l的醋酸钠溶液,溶液中增大的是[ ]
A.c(H+)
B.c(OH-)·c(H+)
C.c(OH-)
D.
I think I ate _____ at lunchtime. [ ]
A. something well
B. something bad
C. bad something
D. good