It was a great day              we did not enjoy it at the beginning. [ ]

A. and

B. but

C. or

D. then

《中国药典》2010年版采用水解后重氮化-偶合反应显红色进行鉴别的药物是（）

A.盐酸普鲁卡因

B.对乙酰氨基酚

C.盐酸利多卡因

D.阿司匹林

E.肾上腺素