Chinese silk 表示的是复数还是单数?答:例如:water, bread, money, iron, food, steel, tea, coal, wood, light, paper, ink, glass, rice, meat, wheat, wine,cloth,oil等等。不过,以复数形式出现的物质名词往往表示种类。试比较:They are in short of food / foods. 他们缺少食物 (各种食品)。The Chinese like tea. 中国人...