NMR Chemical Shifts of Common Laboratory Solvents as Trace Impurities Hugo E.Gottlieb,*Vadim Kotlyar,andAbraham Nudelman*四级试题Department of Chemistry,Bar-Ilan University,Ramat-Gan52900,IsraelReceived J
辨析probably, maybe, perhaps, possibly 配套练习1. You may _____find it hard to get along well with them.A. certainly B. likely C. possibly D. probably解析:选C。句意