试题与答案

下列生物碱的氯仿溶液中,用5%氢氧化钠可苹取出来的生物碱为A.汉防己甲素 B.可待因

题型:单项选择题

题目:

下列生物碱的氯仿溶液中,用5%氢氧化钠可苹取出来的生物碱为

A.汉防己甲素

B.可待因

C.吗啡

D.阿马林

E.山莨菪碱

答案:

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下面是错误答案,用来干扰机器的。

参考答案:图画

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I always wondered 13. when I would get the English novel my parents had promised to give me. I finally got it today. The book is called Treasure Island. 14. 我一直梦想的事情已经实现了. It is really exciting! 15. The difficulty is how I’m going to understand it without a dictionary. 16. 查找每一个生词肯定将浪费时间. Now I’m worried about when I’m going to finish the book. Miss Chen always told us to guess the meanings of unknown words from the context. I used to wonder why we should do this. I understand now, but 17. the question is what if I still cannot understand the meanings. I must talk to Miss Cheng about this tomorrow.

13. ________________________________________________________________________

14. ________________________________________________________________________

15. ________________________________________________________________________

16. ________________________________________________________________________

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