A:Frenchmen; Germans
B:Germans; Frenchmans
C:Frenchmans; Germen
D:Germen; Frenchmen
若用18O标记的CH3CH218OH与乙酸反应制取乙酸乙酯,则会出现的结果是( )
I want to know _________ you will come back at 8:00 tomorrow.