题型:判断题 盐酸普鲁卡因受热后可使湿润的紫色石蕊试纸变红的原因是()A.芳伯胺基被氧化B.形成了聚合物二乙氨基乙醇C.叔胺基团反应的结果D.发生了重氮化偶合反应E.生成了水解产物二乙氨基乙醇 查看答案
题型:判断题 My son wants a pet rabbit for long, but I have no time to buy ______ for him. [ ]A. it B. one C. this D. that 查看答案