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问题 单项选择题

司可巴比妥钠鉴别反应是（）

A．与碘试液的加成反应 

B．甲醛-硫酸反应 

C．与硝酸铅的呈色反应 

D．水解后重氮化-偶合反应 

E．重氮化-偶合反应

答案

参考答案：A

选择题

Her birthday is _____ July 2. And my birthday is also _____ that month.[ ]

A. in; on

B. in; at

C. on; in

D. on; at

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单项选择题

Marketing is ______ just distributing goods from the manufacturer to the final customer.

A．rather than

B．other than

C．bigger than

D．more than
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