铁道、航运等信号灯用电应执行什么电价？

阅读理解。

     All of the people in Poland (波兰) know the two short, round men. They are twins. The elder brother

is quiet. The younger brother likes to play. They look the same. The only difference is a birthmark (胎记)

on one of their noses.

     In an old funny movie, they were stars. Now they work in one party (政党). They go swimming and

play basketball together.

     The younger brother is the President of Poland. The elder helps him. The younger brother always says,

"When my brother has a good idea, I will do it." The elder says,"I will stand behind my brother wherever

(无论哪里) he is."

     People think both of them are good!

1. What are the twins like?

A. They are tall.

B. They are fat.

C. They are thin.

D. They are strong.

2. What does the younger brother do?

A. A movie star.

B. A runner.

C. The president of the country.

D. A player.

3. What does "I will stand behind my brother wherever he is." mean?

A. The elder is helpful for his brother to do his work.

B. The elder needs his brother's help.

C. The elder does not know where to go.

D. The elder runs slower than his brother.

4. Which is right according to (根据) the passage?

A. The twins are famous players in Poland.

B. The elder brother likes talking a lot.

C. The younger brother likes to be quiet.

D. The twins were in a funny movie when they were young.

5. What do we learn from the passage?

A. People in Poland like the twins.

B. The twins want to be movie stars.

C. People in Poland don't like the elder brother.

D. The twins don't help each other.

【阅读下列材料：

2008年，电视连续剧《金婚》在全国热播。《金婚》以编年体的形式描写了一对普通的中国夫妇（佟志和文丽）50年的婚姻生活，同时也折射出新中国半个世纪以来的社会变迁。请从下列镜头回放中，挖掘出相关历史信息，回答问题： 

镜头一：《金婚》第4集中，1958年，庄嫂生下儿子取名“跃进”。

镜头二：《金婚》第12集中，男主角佟志和造反派小将们有这样一段对话：佟志说：“最高指示，要文斗不要武斗！”造反派小将们将佟志夫妇推向门边站着，一边高喊：“最高指示，打倒一切反动派！”

镜头三：《金婚》第36集中，1991年工厂要和港商合资，动员职工买股票。

请回答：

（1）庄嫂给儿子取名“跃进”，可以从中推断当时全国正在掀起什么运动？（１分）

（2）镜头二发生在哪一历史事件时期？该事件结束的标志是什么？（2分）

（3）镜头三反映了改革开放后的社会现象，改革开放是在哪次会议上作出的伟大决策？该会议确立了以谁为核心的第二代领导集体？（2）

（4）以上三组镜头反映了新中国的历史变迁，我们可以从中得到哪些有益的启示？（3分）

下图为某地人口移动与年龄关系示意图，读图回答5——7题：

小题1:从图中判断，影响该地区人口移动的主要因素最可能是

A．人口的老龄化

B．婚姻家庭

C．政治因素

D．经济因素小题2:20世纪70年代以来，图示现象在我国主要表现为：

A．人口流动

B．人口迁移

C．环境移民

D．国际难民小题3:有关人口移动的叙述，不正确的是

A．人口移动只是使不同地区人口数量发生变化,对环境基本上无影响

B．有可能给迁入地带来一些社会问题

C．促进了经济发展,加强民族融合,增进文化交流

D．从年龄段来看,人口移动以青壮年为主

如图是“子宫内的胎儿、脐带和胎盘”示意图，请据图回答下列问题：

（1）一般来说，怀孕到第______周时，③就发育成熟了．成熟的③和______（填序号）从母体的 * * 排出，这个过程叫做______．

（2）如果孕妇喝酒、吸烟或者吃了某些药品，酒精、烟草和这些药品中的有害物质，就会通过______（填序号）到达③的体内，对③的生长发育产生不良影响．

药材赭石的主成分是（）

A.四氧化三铁

B.碳酸锌

C.氯化亚汞

D.二硫化铁

E.三氧化二铁