1. (2021四上·期末) 连线。 

 塑料包装              废纸箱 

 易拉罐                电池 

 尘土                 灯泡 

 剩饭剩菜            水银温度计 

 骨头                        过期药品 

 果皮                        用过的餐巾纸 

 烟蒂