用泡沫灭火剂扑救未切断电源电气火灾会产生（）。 A.隔离空气作用 B.冷却作用 C.

阅读理解。

     A young man once went into town and bought himself a pair of trousers. When he got home, he went

upstairs to his bedroom and put them on. He found that they were about two inches too long. He went

downstairs to the kitchen. His mother and two sisters were washing up the tea-things there. "The new

trousers are too long," he said politly. "They need shonening by about two inches. Could one of you do

it for me, please?" His mother and sister were busy and none of them said anything. But as soon as his

mother had finished wash'ing up,she went quietly upstairs to her son's bedroom and shonened the

tmusers by two inches. She came downstairs without saving anything to her daughters.

     Later on. after supper, the elder sister remembered her brother's trousers. She was a kind-hearted

girl, so she went quickedy upstairs without saying anything to anyone,and shortened the trousers by two

inches.

     The younger sister went to the cinema, but when she came home,she also remembered her brother's

trousers. So she ran upstalrs and did as her mother and sister had done. You can imagine the look on the

young man's face when he put the trousers on the next morning.

1. The young man's trousers were _____ for him at first.

A. a bit too long    

B. very good    

C. not too long    

D. too shon

2. The young man's mother and sisters didn't answer because they were busy _____ in the kitchen．

A. cooking        

B. making tea

C. washing clotlles    

D. washing cups,glasses and so on

3. His elder sister shortened the trousers _____.

A. in the evening    

B. after lunch

C. as soon as she had finished the  washing    

D. after she came back from the cinema

4. The next moming the young man found that the trousers were _____ inches too short for him.

A. two    

B. four    

C. six    

D. eight

5. We can imagine that when the young man put the trousers on the next morning, he Would feel _____

A. happy    

B. surprising    

C. surprised    

D. thankful

如图所示，一小朋友从A点以1m/s的速度抛出一皮球，使皮球滚上滑梯。设皮球在滑梯上运动的加速度方向始终沿斜面向下，且大小始终为5m/s²。试求皮球运动0.8s时的位移。（设滑梯足够长）

       ①在社会上常听到叫某人为“大师”，有时是尊敬，有时是吹捧。又常不满于某件作品，说有“匠气”。匠人与大师到底有何区别？

       ②匠人在重复，大师在创造。一个匠人比如木匠，他总在重复做着一种式样的家具，高下之分只在他的熟练程度和技术精度。比如一般木匠每天做一把椅子，好木匠一天做三把、五把，再加上刨面更光，合缝更严等等。但就算一天做到１００把也还是一个木匠。大师则绝不重复，他设计了一种家具，下一个肯定又是一个新样子。判断他的高下是有没有突破和创新。匠人总在想怎么把手里的玩艺儿做得更多、更快、更绝；大师则早就不稀罕这玩意，而在不断构思新东西。 

       ③匠人在实践层面，大师在理论层面。匠人从事具体操作水平的上限是经验丰富，但还没从经验上升到理论。虽然这些经验体现和验证了规律，但还不是规律本身。大师则站在理论的层面上，靠规律运作。□甲面对一片瓜地，匠人忙着一个一个去摘瓜，大师只提起一根瓜藤；面对一大堆数字，匠人满头大汗，一道接一道地去算，大师只需轻轻给出一个公式。匠人常自持一技，自炫于一艺，偶有一得，守之为本；大师视鲜花掌声为过眼烟云，进取不竭，心犹难宁。居里夫人把诺贝尔奖章送给小女儿当玩具，但是接着她又得了一个诺奖。

       ④匠人较单一，大师善综合。我们常说一技之长，一招鲜，吃遍天，这是指匠人，大师则不靠这，他纵横捭阖，运筹帷幄，触类旁通，举一反三。因为凡创新、创造，都是在引进、吸收、对比、杂交、重构等大综合之后才出现的。当匠人靠一技之长，享一得之利，拿人一把，压人一筹时；大师则把这一技收来只作恒河一沙，再佐以砖、瓦、土、石、泥，起一座高楼。牛顿、爱因斯坦成为物理大师并不只因物理，还有更重要的数学、哲学等。一个画家，当他成为绘画大师时，他艺术生命中起关键作用的早已不是绘画，而是音乐、文学、科学、政治、哲学等。而一个社会科学方面的大师要求更高，马克思、恩格斯是一部他们那个时代的百科全书，毛 * * 则是当时中国政治、军事、文学的宝典。

       ⑤这就是大师与匠人的区别。研究这个区别毫无贬损匠人之意，大师是辉煌的里程碑，匠人是可贵的铺路石。世界是五光十色的，需要大师也需要匠人，正如需要 * * 也需要士兵。但是我们必须承认这个世界需要人们有一个较高的追求目标。拿破仑说不想当 * * 的士兵不是好士兵。 * * 总是在优秀的士兵中成长起来的。当他不满足于打枪、投弹的重复而由单一到综合，由经验到理性，有了战役、战略的水平时他就成了 * * 。□乙鲁班最初也是一名普通木匠，当他在技术层面已经纯熟，不满足于斧锯的重复，而进军建筑设计、构造原理时，就成了建筑大师。虽然从匠人而成为大师的总是少数，但这种进取精神是人类进步、社会发展的动力。古语说，法乎其上，得乎其中；法乎其中，得乎其下。要是人人都法乎其下呢？这个社会就不堪设想。

       ⑥我们可能在实际业绩上达不到大师水平，但至少在思想方法上要循大师的思路，比如力求创新，不要重复，不要窃喜于小巧小技，沾沾自喜。对事物要有识别、有目标、有追求。力虽不逮，心向往之。在个人有了这样一种心理，就会有所上进；在民族有了这样一个素质，就会生机勃勃；在社会有了这样一个氛围，就是一个创新的社会。（作者：梁衡，有改动）

1．本文的中心论点是什么？

2．第③段、第⑤段画横线的句子分别运用了什么论证方法？有什么作用？

     甲：                                                                                                                         

     乙：                                                                                                                          

3．笫④段中有一个事实论据不恰当，请找出来并说明理由。

4．请简述本文的论证过程。

沉淀池的操作管理主要工作为（）。

A、撇浮渣

B、取样

C、清洗

D、排泥

审查法定代表人签名的真实性和合法性的主要内容包括（）

A.查验其身份证原件是否真实有效

B.法定代表人与营业执照上所载明的法定代表人是否相符

C.法定代表人证明书所规定的有效期是否有效

D.法定代表人及经营范围的变更。