开放性、远离平衡态、非线性相互作用和（），是自然系统演化的自组织机制。A、分叉 B

阅读短文，完成下列题目。

      Many children love watching TV in their spare time. Some of them spend six hours a day in front of the

television set. Some of them even watch for eight hours or more on Sundays. A child can learn bad things and

good things from TV. Some shows (节目) help children learn to do a lot of housework, like gardening, cooking

and cleaning. But some programmes are not good for children. So parents must help them choose the right

ones to enjoy.

根据短文内容，从A，B，C，D四个选项中选出恰当的一项完成下列各题。

1. What do children like to do in their spare time?

A. Draw TV.

B. Buy TV.

C. Send TV.

D. Watch TV.

2. How many hours do children spend at school?

A. About four hours.

B. About six hours.

C. About seven hours.

D. About eight hours.

3. Which of the following is true?

A. All the children spend eight hours on TV every day.

B. Children can't learn anything from TV.

C. Children can only learn good things from TV.

D. A child can learn bad things and good things from TV.

根据短文内容填空（每空一词）。

4. Some shows help children learn to do some ______________.

5. Parents should ______________ children choose good programmes to watch.

治疗小儿口疮脾胃积热证，应首选（）

A.清胃散

B.清热泻脾散

C.六味地黄丸

D.泻心导赤汤

E.凉膈散

患儿，女，2岁，因"发现下肢乏力2月"就诊，查体：身高：80cm，体重：10kg，体温：36.5℃，四肢血压分别为：左上105／43mmHg，左下74／40mmHg，右上97／37mmHg，右下87／25mmHg，心率：110次／分，口唇及肢端无紫绀，腹软，肝脾肋下未触及。心电图表现为左心室肥大。

当主动脉缩窄处的狭窄程度低于相应的正常部位主动脉横截面积多少时，出现压力阶差（）

A.20%

B.30%

C.50%

D.60%

E.70%

F.80%

产业转移指企业将产品生产的部分或全部转移到其它地区。国际产业转移一般表现为

A．由沿海向内陆转移

B．由发达国家向发展中国家转移

C．由资源富裕地区向贫乏地区转移

D．先转移资金密集型产业后转移劳动力密集型产业

萧条阶段的明显特征是( )。

A．需求严重不足，生产相对过剩，销售量下降

B．价格低落，企业盈利水平极低，生产萎缩

C．出现大量破产倒闭，失业率增加

D．经济处于崩溃期