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问题 选择题

下列物质中，不属于天然高分子化合物的是：

A．油脂

B．聚乙烯塑料

C．淀粉

D．蛋白质

答案

答案：B

A不是高分子化合物，B是人工合成的高分子化合物，CD都是天然高分子化合物，答案选B.

改错题

Dear Editor,

I'm a senior high student in a key school of Banding city.  I'm fond of play basketball  It is known by us that the college entrance examination is approaching and we should get good prepared for it.  Thus I had no choice but play basketball just on holidays.  However, I really hope to do it every day, and my parent insist that I give it up.  They think learning is their first task and I should throw whole of myself into study.  How do you think of it? Could you give me some advice on how to deal with the problem?

I am looking forward to your early reply.

Li Hua
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多项选择题

治疗消化性溃疡的药物包括

A．氢氧化铝

B．哌仑西平

C．组胺

D．雷尼替丁

E．普萘洛尔
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