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2.能正确书写原电池的正、负极的电极反应式及电池反应方程式。

知识梳理

 1:组成原电池的条件。

①   有两种活性不同的金属(或一种是非金属导体)。

②   电极材料均插入电解质溶液中。

③   两电极相连形成闭合电路。

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1.通过进行化学能转化为电能的探究活动,了解原电池工作原理.

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 第二节:书面表达(满分30分)

   春爱花开,正是春游的好时节。学校将组织学生春游。作为高三学生,你认为有没有必要参加这次春游。请你就这一话题写一篇英语短文,阐述你的观点并说明理由。

注意:词数100-120,文章的开头已给出(不计词数)。

  It is spring                                 

                                         

                                         

                                         

                                         

                                         

                                         

                                         

                                         

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第一节:短文改错(共10小题;每小题1分,满分10分)

   假如英语课上老师要求同学们交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,要求你在错误的地方增加、删除或修改某个单词。

   增加:在缺词处加一个漏词符号(∧),并在其下面写上该加的词。

   删除:把多余的词用斜线(\)划掉。

   修改:在错的词下划一横线,并在该词下面写上修改后的词。

注意:1.每处错误及其修改均仅限一词;

      2.只允许修改10处,多者(从第11处起)不给分。

例如:It was very nice to get your invitation to spend ∧ weekend with you.Luckily
                            The
 I was completely free then , so I'll  to say “yes”.I'll arrive in Bristol at around
   am          
 8 pm in  Friday eveing.
    on

Lantern Festival is a traditional festival of the China.It is celebrated on the fifteen day of the first month of the lunar year.Lantern Festival is one of the biggest holiday in China.Several days before Lantern Festival, people began to make lanterns.Lanterns are made in the shape of differently things, usually with some riddle on them.On eve of Lantern Festival, all the lanterns are hung up.In lantern Festival people to outside to have a look at the lanterns but guess the riddles on them.Perhaps you can see any wonderful folk performances, Dragon Dance and Yangko.Everything is very interested and everyone is very happy.

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