柠檬酸(C6H8O7)是一种较强的有机酸,在水溶液中可以解离出来H+,从而呈现酸性,主要用于香料或作为饮料的酸化剂.下列物质不能与柠檬酸反应的是( )
A:Mg
B:Fe2O3
C:CO2
D:NaOH
下列计算错误的是( )
We are going to play a basketball game _________ Class One this Sunday.
Ms Jones needs one____(人)to help her do the work.