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问题 单项选择题 A1/A2型题

中性醋酸铅可以沉淀的成分是（）

A.仲胺碱

B.叔胺碱

C.对位酚羟基

D.对位醇羟基

E.邻位酚羟基

答案

参考答案：E

解析：中性醋酸铅只能沉淀邻位酚羟基，所以答案为E。

填空题

选做题：读短文填单词。

     Do you like friends who can teach you a lot every day? Books are 1.s_______ friends because they bring

knowledge to us and keep us company through our life. They are so valuable that 2._______ (图书馆) are

built to 3._______ (存放) them. Almost all great men are lovers of books. Franklin said that it was books that

4.1_______ him to success and that he could have achieved nothing 5.w_______ books. Books are the holders

of mankind's 6._______ (经验) and imagination. They enable us to see through the past and predict the

7._______. So when you open a book, you would get into a world 8._______ you have never beer/before. A

good book is a good teacher that 9.h_______ you to get over difficulties. No matter what you are, 10._______

or old, poor or rich, books are your devoted friends. Love books and love life.

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问答题 简答题

创建国家卫生城市，对城市市容市貌的总体要求是什么？
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