2. 外语
  3. Glass is made of mixture of many substances melted together in a large furnace. The most important substance is silica which is

Glass is made of mixture of many substances melted together in a large furnace. The most important substance is silica which is

admin2009-05-28  24
问题    Glass is made of mixture of many substances melted together in a large furnace. The most important substance is silica which is found in sand. Potash (钾碱), obtained from wood-ashes, is also necessary. To these two substances are added lime, lead, soda  
选项
答案backwards and forwards
解析
转载请注明原文地址:https://kaotiyun.com/show/yHwK777K
本试题收录于： 大学英语三级B级题库大学英语三级分类
0

大学英语三级B级

大学英语三级

相关试题推荐
随机试题
最新回复(0)