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【单选题】
在旧社会里，我们评剧演员常常挣钱不够吃饭，艺人们大都是拉家带口，生活困难。A.
In the old society, Pingju performers seldom made enough to live on, and as most were saddled with big families, their life was hard.
B.
In the old society, Pingju performers couldn't earn enough money to live on. Most of them were saddled with big families, their life was hard.
C.
In the old society, Pingju performers seldom made enough money to eat. Most of them were saddled with big families, and their life was hard.
D.
In the old society, Pingju performers couldn't earn enough money to eat. Most of them were saddled with big families, and their life was hard.
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于甲型强心苷的鉴别反应说法错误的是( )
A.
Legal反应显阳性
B.
在碱性条件下形成活性次甲基
C.
过碘酸-对硝基苯胺反应显阳性
D.
Kedde反应在可见光区有最大吸收
【多选题】甲型强心苷所具有的性质是()
A.
3，5-二硝基苯甲酸反应阳性
B.
IRνC=O1750~1760cm-1
C.
IRνC=O1720cm-1
D.
UVλmax217~220nm
E.
Uvλmax295~300nm