题目

I haven’t seen______ this since I collected stamps. A. as old a stamp as                 B. so an old stamp as C. stamp as old as                   D. as an old stamp a   答案：A表示“象这么旧的邮票”可用以 下形式表达：as old a stamp as this； a stamp as old as this； 否定句中前一个as可用so。  下列物品与所用材料的对应关系不正确的是A．羊毛衫——天然纤维 B．汽车轮胎——塑料 C．食品袋——塑料 D．不锈钢餐具——铁合金