八年级语文下册第三单元12罗布泊消逝的仙湖课件新版新人教版20190108433.pptx

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1、12* 罗布泊,消逝的仙湖,一,二,三,g,s,眺,煦,h,b,噬,p,b,zi,zi,ch,x,一,二,三,二、重要词语 1.和煦: 2. :(河道、池塘等)没有水了。 3. :融合成一个整体,不可分割。 4.庇护: 5.吞噬: 6. :大海变成农田,农田变成大海。比喻世事变化很大。,温暖。,干涸,浑然一体,袒护,保护。,吞食;并吞。,沧海桑田,一,二,三,1.罗布泊过去为什么被称作“仙湖”?现在又是怎样一番景象?2.罗布泊消逝的原因是什么?,罗布泊过去是广阔、美丽、充满生机的湖泊,罗布泊周边是牛马成群、绿林环绕、河流清澈的生命绿洲,被称为“仙湖”。 现在的罗布泊变成了一片死寂的荒漠,胡杨林

2、成片死亡,寸草不生,不见飞鸟,令人恐怖。,一是20世纪20年代塔里木河曾经人为改道,导致下游干旱缺水;二是盲目滥用塔里木河水资源,致使下游河道干涸、罗布泊断水,生态环境彻底破坏。,3.造成罗布泊生态环境破坏的深层原因是什么?我们从中应吸取哪些教训?4.作者为什么在结尾段说“救救青海湖,救救月牙泉,救救所有因人的介人而即将成为荒漠的地方”?,只图眼前利益,不顾长远利益,没有可持续发展的观念。 开发要克服盲目性,认识自然规律,认识生态平衡,谋求发展必须抓好生态环境的保护和建设。,作者在后文用一组准确的数据,突出青海湖和月牙泉干涸之势的严峻性,是为了说明像罗布泊一样的生态环境的悲剧还有可能重演,从而引起人们的警醒,呼吁人们保护生态环境,让悲剧不再重演,这也是作者的写作目的。,

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