问题 单项选择题

国家卫生行政部门负责()

A.组织制定国家基本药物目录

B.药品、医疗器械行政监督和技术监督

C.药品价格的监督管理工作

D.研究制定药品流通行业发展规划

答案

参考答案:A

单项选择题

上海人爱吃大闸蟹,阳澄湖的大闸蟹更是名噪国内外.但吃完大闸蟹,看到满桌狼藉的蟹骸,你可曾想过它的用途,可曾想过变废为宝其实,蟹壳中还有一种丰富的自然资源,即甲壳素.甲壳素又名蟹壳素、聚乙酰氨基葡萄糖等,是一种维持和保护甲壳动物和微生物躯体的线性氨基多糖,广泛存在于节足动物类的翅膀或外壳中,壳聚糖又称聚氨基葡萄糖、可溶性甲壳素,是由甲壳素经脱乙酰化反应化变成的发子量为12~59万个的生物大分子.从勃拉康于1811年描述甲壳素至今,甲壳素和亮聚糖已有100多年的发展历史.也许你没有发现,在我们的日常生活中时时可见壳聚糖的身影.壳聚糖具有很好的抗菌活性,将其添加到固渡食品中,既会对法液有一定的澄清作用,又可以起到防腐保鲜作用,又由于壳聚糖只能溶解在弱酸中,因此特别适合酸性或低酸性的食品保鲜,如常添加于腌腌制食品中或用于海产、水果的保鲜.用壳聚糖做原材料,让其溶液在聚乙烯膜上蒸发,进而在一个钢膜中加压即可形成软性接触眼镜,即隐形眼镜.壳聚糖作为原材料制备的隐形眼镜,其优异的透氧性和促进伤口愈合的特性,为发炎或受伤的眼睛的辅助治疗提供了美好的前景.壳聚糖具有良好的生物相容性和生物降解性,降解产物一般对人体无毒副作用,在体内不积蓄.用甲壳素、壳聚糖等原料制成的人工皮肤吸水性、透气性、组织相容性良好.若与乙酸合用,还有镇痛、抗感染等功效.用甲壳素制成的吸收型外科手术缝合线力学性能良好,组织反应好,柔软性好,易打结,具有创伤治愈效果,伤口修复快,创口平整漂亮.在手术伤口愈合过程中,甲壳素缝线在体的抗张强度逐渐下降,并在溶菌酶作用下首先分解成低聚糖,然后经一系列的化学反应,一部分以二氧化碳的形式由呼吸道播出体外:另一部分则以糖蛋白的形式为人体吸收利用. (选自奚同庚主编《原来如此·无所不在的材料》,上海科学技术文献出版社,2005)

关于在手术伤口愈合过程中甲壳素缝线变化的描述,不恰当的是_____.

A.抗张强度逐渐下降

B.溶菌酶作用下分解成低聚糖

C.化学方应后最终得到多样产物

D.所有的生成物质都将被排出体外

阅读理解

(C)

Many people often say there is more stress in today's society than in years past. In fact, these people are comparing our lives with that of the cave man, who didn't have to worry about the stock market or the atomic bomb. They forget that the cave man worried about being eaten by a hear while he was asleep, or about dying of hunger--things that few people worry much about today.

Actually stress is a normal state of affairs, and it's important that people understand what they are talking about when they speak about stress. Whenever anyone experiences something unpleasant, for lack of a better word they say they are under stress. Yet there is such a thing as pleasant stress--as in the case of the Olympic winner at the moment of his glory, or a conductor as his orchestra performs particularly well. They are just sending out excitement, and they are giving off all the stress hormones exactly the same as if they were in low spirits or had just heard of a death in the family. We call the pleasant or healthy kind "eustress” and the unpleasant or unhealthy kind "distress".

Then how can people deal with stress? The secret is not to avoid it but to "do your own thing". It implies doing what you like to do and what you are made to do at your own speed. For most people, it is really a matter of learning how to live and how to behave in various situations, to decide: “Do I really want to take my father's business or be a musician?” If you really want to be a musician, then be one.

64. What can be inferred from the first paragraph?

A. Modern people experiences more stress than the cave man.

B. The cave man experienced more stress than modern people.

C. People don't suffer more stress today; it's just that they think they do.

D. Modern people have the same worries as the cave man did.

65. In which of the following situations will you feel "eustress"?

A. Your favorite football team has lost an important game.

B. You have failed an important examination.

C. You are informed of an accident of your best friend.

D. You have won the first prize in an English competition.

66 The purpose of writing the passage is to let us know _________________________.

A. stress does not necessarily refer to unpleasant experience

B. distress is what people call the pleasant kind of stress

C. an Olympic winner feels the same stress as one who loses a family member

D. people will feel eustress and distress at the same time

67. According to the passage, how can people deal with stress?

A. Do things that you really want to do.    B. Do whatever you're expected to do.

C. Try to do things successfully.         D. Refuse to do whatever you're told to.