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3.No one knows for sure when a fire will happen,so it is  (56)extremely (extreme) necessary to make preparations before a fire starts.Check the fire escape equipment in advance and make sure that you can find (57)it in the dark when lights have failed.Find out (58)Wherethe nearest fire extinguisher(灭火器) is and read the instructions to learn how  (59)to use( use) it.
Don't lose your head when a fire breaks out.First,telephone the fire department immediately when  (60)the  fire just gets started.Take care not to be overcome by smoke,(61)which can kill you quickly.Cover your mouth (62)with a wet towel or cloth,and avoid getting into the smoke.Don't get in an elevator,as you may get trapped if the electricity  (63)fails (fail).If you can not get away (64)by yourself,it is of great importance to hang something out of the window to attract attention as a sign of asking for help.
In short,if you make preparations before hand and take precautions(预防措施) during the fire,chances are that (65)youwill survive in case of a fire if it really breaks out some day.

分析 本文主要讲述火灾发生时的一些注意事项.首先,当火灾开始时立刻拨打电话;当心不要吸入烟以及火灾中不要乘电梯等.

解答 56.extremely   57.it      58.Where   59.to use   60.the 
61.which      62.with    63.fails    64.by      65.you
56.extremely 考查副词.形容词necessary要用副词修饰,形容词extreme的副词是extremely.
57.it 考查代词.it代指前文的the fire escape equipment.
58.Where  考查宾语从句.句意:发现最近的灭火器在哪里.
59.to use  考查动词不定式."特殊疑问词+动词不定式"作learn的宾语. 
60.the 考查冠词.根据句意:首先,当火灾开始时立刻拨打电话.the表示特指.
61.which 考查定语从句.分析句子结构可知这是一个定语从句,先行词smoke指物,在从句中作主语,用关系代词which. 
62.with 考查介词.cover…with…意为"用…遮盖住,用…填满",是固定搭配.
63.fails 考查动词时态.在条件状语从句中用一般现在时代替一般将来时,因主语electricity是不可数名词,谓语动词用单数.
64.by 考查介词.by yourself意为"单独地,独力地",是固定搭配.
65.you 考查代词.全文都是用you表示"(泛指)任何人",此处也应用you.

点评 在一篇200词左右的语篇(短文或对话)中留出10处空白,部分空白的后面给出单词的基本形式,要求考生根据上下文填写空白处所需的内容或所提供单词的正确形式,所填写词语不得多于3个单词.要做好语法填空题,理解短文是解题的前提,扎实的词汇、句型和语法知识是基础,英语国家的背景知识是必要的补充.考生须灵活运用语法知识,如单词词性、单词时态、名词单复数、连接词、代词、冠词等判断各空白处应填写的内容.答完后,还要通读全文,核对所填单词形式是否正确,是否符合语境.

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