（4分）水是最普通、最常见的物质之一。 （1）“水”有很多种。下列“水”属于纯净

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问题：

（4分）水是最普通、最常见的物质之一。

（1）“水”有很多种。下列“水”属于纯净物的是          （填字母序号）。

A．河水     B．自来水      C．矿泉水      D．蒸馏水

（2）下列做法会造成水体污染的是 (填字母)         .

A.随意弃置废旧电池              B.含二氧化硫的工业废气任意排放

C.工业废水处理达标后再排放      D.严格监管化肥和农药的使用

（3）水是重要的溶剂和化工原料。氯碱工业以饱和食盐水为原料电解获得烧碱等化工产品，同时得到一种是最轻的气体，另一种是氯气，反应的化学方程式为：                            

考点：电解水实验水的组成
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逆向思维是一种重要的思考能力，是对事物的性质、功能、方位、、趋势进行综合思考后，发现常态思维已经“山穷水尽疑无路”，将思维反转，有时会意外地“柳暗花明又一村”，产生出奇制胜的效果。这说明

(1)逆向思维是一种创造性思维

(2)逆向思维能突破一切认识障碍

(3)逆向思维能使人们的认识能力进一步发挥

(4)逆向思维要求人们思考问题要打破常规，不居一格

A(1)(2)(3)(4)B(1)(3)(4)C(1)(2)(4)D(2)(3)(4)
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There are lots of funny stories in my childhood .The first one that  16  my mind is the story of my first camera. It happened 20 years ago . Just when I was ready to go to school , my grandmother  17  me a new camera from the supermarket as a present . Even if my mother wasn’t too happy about what I had  18  , I asked my father if I could take my camera to my  19   so that I could take pictures with my classmates . He agreed and show me how it  20  . It was very easy.
At school I showed it to all my  21  and we took a lot of pictures,  22  they were not too great . The photo with my friends was the worst as I didn’t took Tom’s head ; instead I  23  his sandwich . The boys were interested in my camera ,   24  Daniel who said he had a  25  one with a flashlight . He explained to us that the flashlight helped to take pictures in the  26  but I accused(指责)him of being a liar . Like all boys we started fighting .  27  ,our teacher separated us .After explaining to him the reason of the fight , I   28  him not to take my camera away.
When my parents knew what had happened , they weren’t glad . My mother punished me for being 29   . She took the camera in order to   30  further problems , telling me that for a boy like me the camera was not a good  31   to play with.
To make her  32  about the fight , I took a picture with her and Dad with the film left . In a couple of days Dad  33  the films and brought the photos home , saying I wasn’t good at taking pictures at all . I got  34  and argued that we all learnt from our   35  .
小题1:
A．breaks intoB．drops intoC．turns intoD．comes into
小题2:
A．boughtB．promisedC．lentD．left
小题3:
A．imaginedB．receivedC．expectedD．collected
小题4:
A．homeB．yardC．schoolD．garage
小题5:
A．movedB．startedC．changedD．worked
小题6:
A．workersB．classmatesC．teachersD．students
小题7:
A．butB．soC．forD．and
小题8:
A．broughtB．madeC．dividedD．took
小题9:
A．exceptB．besidesC．includingD．instead
小题10:
A．easierB．newerC．worseD．better
小题11:
A．darkB．shadeC．sunD．water
小题12:
A．SuddenlyB．FinallyC．UnluckilyD．Surprisingly
小题13:
A．allowedB．advisedC．beggedD．warned
小题14:
A．braveB．proudC．rudeD．weak
小题15:
A．avoidB．solveC．discussD．face
小题16:
A．roleB．gameC．jokeD．toy
小题17:
A．talkB．knowC．forgetD．worry
小题18:
A．developedB．lostC．producedD．hid
小题19:
A．angryB．upsetC．tiredD．bored
小题20:
A．storiesB．hobbiesC．mistakesD．books
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下列哪项与牙隐裂无关（）。

A.牙冠表面的非生理性裂纹

B.常发生于前磨牙颊侧颈部、磨牙近中腭尖

C.可引起牙痛症状

D.常与刷牙不当有关

E.常由创伤、外伤等引起
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题型：填空题

简述教育文献检索的基本过程。
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脉冲I/O功能块是（）功能块

A、开关量输出

B、模拟量输入

C、模拟量输出

D、开关量输入
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