可以减缓Alzheimer病症状恶化的药物是()A．Donepezil B．左旋多巴_爱下问搜题

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问题单项选择题

可以减缓Alzheimer病症状恶化的药物是()

A．Donepezil

B．左旋多巴

C．维生素E

D．维生素B12

E．泼尼松

答案

参考答案：A

填空题

糖类、蛋白质是基本的营养物质，在我们的生活中扮演着极其重要的角色．如何识别这些物质的真伪，既可以检验同学们将化学知识与实际相结合的能力水平，又可以减少伪劣物品对我们生活质量的负面影响．请根据下列的实验现象填写（填序号）：①蓝色 ②黄色 ③砖红色沉淀 ④银镜现象

淀粉中加碘水的现象______；蛋白质中加浓硝酸的现象______；葡萄糖中加银氨溶液并加热的现象______；葡萄糖中加新制氢氧化铜并加热的现象______．

完形填空

What is it that you love to do but never feel that you get it quite right? Perhaps you don't even try any more because you think what you do is not        enough．
Discouragement seems to follow us a good part of the time,        however hard we work, it seems that there is        someone else who can do it much better．
I have always enjoyed music and it is        to me that every musician has a        of their own．My father _      several instruments and when he played with other people, it was not difficult to        his sound in a group．Whether it was guitar or another instrument, he had his own        sound．
I        heard of a music teacher who commented to a discouraged student, "        else can make the sound that you make．" The sound that you make may not be the same as someone else's, but who is to say which is      ．It is said that, "        is in the eye of the beholder .” . Perhaps it could be said that a delightful sound is in the ear of the       ．
Every person has a different tone of voice that        only to them,        we all know people with an unforgettable laugh or a way of        that is unique to them．It might not be the sound of your music or your voice at all．It        be the way you whistle or the sound of your footsteps．
Each person has a（an）        on the world in some way．Someone else can do what you do, but they cannot do it        in the same way that you do it．The next time you feel       , remember nobody else can make the sound that you make．

D．interesting

C．discouraged