I think you should stop ______ him in English.
I see.He can't understand English at all.Let me try in French.( )
A.talking toB.to talk to
C.talk toD.to talking to
将钠放置在空气中,是生成白色的Na2O还是淡黄色的Na2O2,主要取决于下列因素中的
下列仪器能直接用于加热的是
下列常用食品添加剂不属于电解质的是
对溶液、浊液、胶体的下列叙述错误的是
1mol/L NaOH溶液的含义是