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1.(乐山)如图所示,A、B、C、D、E、F均是初中化学常见物质。A与B发生的是复分解反应,B与C发生的是中和反应,F是人体正常生理活动必不可少的一种盐。

结合图中信息,回答有关问题:

(1)E的化学式为      

(2)A与B反应的化学方程式为       

(3)C与D反应的化学方程式为         。

答案:(1)H2O ;(2)Na2CO3+2HCl=2NaCl +H2O +CO2↑;(3)CO2+2NaOH= Na2CO3+ H2O。

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120.tidy up整理,收拾

  She decided to tidy up the upstairs rooms.

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119.tell apart区分,辨别

  The teacher could not tell the twins apart.

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118.tear down拆除

  Did they tear the building down?

  tear up撕碎,连根拨起

  I'm afraid I’ve torn it up.

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117.sweep away冲走,卷走,扫除

  The dust has all been swept away.

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116.suspect sb.of怀疑某……

  I suspect him of killing the girl.

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115.supply sth.to/for向……提供

  The school supplies books for the children.

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114.stare at盯着,凝视

  The little girl stared at the toys in the window.

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113.spread out展开,铺开,延伸

  Spread out your fingers.

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112.slow down减慢,减速,慢下来

  Slow down when you come to the main road.

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