日本药局方()
A.JP
B.USP
C.BP
D.Ch.P
E.Ph.Eur
参考答案:A
写出命题“对顶角相等”的逆命题( )。
—I failed again. I wish I _________ harder.—But you _________.
A.had worked; hadn’t
B.worked; don’t
C.had worked; didn’t
D.worked; didn’t