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雅思閱讀輔導(dǎo):玻璃的制作方法

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雅思閱讀輔導(dǎo):玻璃的制作方法

  閱讀段落

  Glass, which has been made since the time of Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime. When heated to about 1500 degrees Celsius this becomes a molten mass that hardens when slowly cooled. The first successful method for making clear, flat glass involved spinning. This method was very effective as the glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a fire finish. However, the process took a long time and was labour-intensive.

  段落大意

  本段介紹了最早制作透明光滑的玻璃的方法,并指出該方法耗時(shí)耗力。

  閱讀筆記

  Glass production:

  Time: Mesopotamians and Egyptians

  Composition: a mixture of sand, soda ash and lime

  Method: 1.heated to 1500 degrees Celsiusa molten mass hardens when slowly cooled

  2. first successful method for making clear, flat glass involved spinning

  3.effective HOWEVER time-consuming and labour-intensive

  邏輯關(guān)系

  1. 因果

  The glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a fire finish.

  This method was very effective.

  2. 對(duì)比

  This method was very effective.

  The process took a long time and was labour-intensive.

  

  閱讀段落

  Glass, which has been made since the time of Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime. When heated to about 1500 degrees Celsius this becomes a molten mass that hardens when slowly cooled. The first successful method for making clear, flat glass involved spinning. This method was very effective as the glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a fire finish. However, the process took a long time and was labour-intensive.

  段落大意

  本段介紹了最早制作透明光滑的玻璃的方法,并指出該方法耗時(shí)耗力。

  閱讀筆記

  Glass production:

  Time: Mesopotamians and Egyptians

  Composition: a mixture of sand, soda ash and lime

  Method: 1.heated to 1500 degrees Celsiusa molten mass hardens when slowly cooled

  2. first successful method for making clear, flat glass involved spinning

  3.effective HOWEVER time-consuming and labour-intensive

  邏輯關(guān)系

  1. 因果

  The glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a fire finish.

  This method was very effective.

  2. 對(duì)比

  This method was very effective.

  The process took a long time and was labour-intensive.

  

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