Question Analyses for the 31st Chinese Chemistry Olympiad (Preliminary Test)(Part Ⅰ)
Taiwei CHANG, Yumin DAI, Runting FANG, Yuxuan LI, Sida SUN, Zehao SUN, Zechun WANG, Chengyu ZENG, Yuting ZHANG
University Chemistry . 2018, (1): 73 -81 .  DOI: 10.3866/PKU.DXHX2017110361