A:聚乙烯塑料的老化是由于发生了加成反应
B:乙酸乙酯在碱性条件下的水解反应称为皂化反应
C:葡萄糖注射液不能产生丁达尔效应现象,不属于胶体
D:棉、麻、合成纤维完全燃烧都只生成CO2和H2O
—Guess what? I happened to have met Mark at the party last week.
—If my memory serves me correctly, you two ________ each other for almost ten years.