题目

 He has never been to Beijing. ________. A. So will I              B. Neither shall I           C. So am I     D. Neither have I 答案：D只用一种试剂，就可以鉴别乙酸溶液、葡萄糖溶液、乙醇溶液和苯，这种试剂是 A. Cu (OH)2 悬浊液    B. Na2CO3 溶液     C. 石蕊试液       D. KMnO4酸性溶液