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问题 单项选择题

中药品种保护的作用不包括( )

A．提高产品质量
B．维护中药生产企业合法权益，制止不正当竞争
C．保障临床用药安全有效
D．用行政手段保护中药知识产权
E．有利于保持国际市场竞争

答案

参考答案：E

解析： 中药品种保护的作用：提高产品质量；规范药品流通市场，淘汰落后、劣质产品，扩大优质品种市场；维护中药生产企业合法权益，制止不正当竞争；保障临床用药安全有效；用行政手段保护中药知识产权。

阅读理解

Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.

Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).

Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.

小题1:If the bottom of an object is ______ its top, it will fall over easily.

A．lighter than

B．heavier than

C．no heavier than　　

D．as heavy as小题2:Please point out which box will not fall.

小题3:The main idea of the passage is _________.

A．why things fall over　　　　

B．a low center of gravity

C．a high center of gravity　　

D．that everything has weight
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判断题

数据库是一组数据的集合。
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