《中国药典》(2010年版)肾上腺素采用的鉴别方法有（） A．

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问题多项选择题

《中国药典》(2010年版)肾上腺素采用的鉴别方法有（）

A．坂口反应

B．与三氯化铁反应

C．重氮化—偶合反应

D．与硝酸银试液的反应

E．与过氧化氢反应

答案

参考答案：B,E

听力题

根据中文意思完成句子（共10题，满分20分）。

小题1:With the improvement of the living standard, people are _____________ (过着幸福的生活)．

小题2:Don't ________________ (看不起) a student only because he has failed in an exam.

小题3:It ________________ (值得读) the newlypublished book written by the famous writer.

小题4:________________ (多亏了) everyone's hard work, the performance was a great success.

小题5:We ________________ (对……满意) you and your classmates yesterday.

小题6:It is really a hot day.I ________________ (宁愿) stay in the house with airconditioning ________________ (不愿) go out shopping.

小题7:Her shoes ________________ (需要修理了)．

小题8: Lisa is busy ________________ (准备) the coming exam.

小题9:Our products _____ (出口) to Southeast Asia to gain more profit.

小题10:No matter what you do, _____ (一旦开始), you must continue.

问答题简答题

什么是标准煤？有何作用？