盐酸溴己新经重氮化后,与碱性β-萘酚偶合生成橙红色沉淀是因其分子结构中含有
A.芳香伯氨基B.脂肪伯氨基C.芳香仲氨基D.酚羟基E.醇羟基
参考答案:A
— She should not have done that sort of thing.
— Whatever she did was reasonable, ________to whatyou have done.Besides, it's none of your
business.Get down to________your lessons. [ ]
A. compared;doing
B. comparing;doing
C. compared;do
D. comparing;do
图中的(a)、(b)、(c)三图分别表示打棒球的三种情况,观察图中的现象可以得出的初步结论是:______.