A:c(Na+)>c (CH3COO-)>c(OH-)>c(H+)
B:c(CH3COO-)>c(Na+)>c(H+)>c(OH-)
C:c(Na+)=c(CH3COO-)+c(CH3COOH)
D:c(H+)=c(CH3COO-)+c(OH-)
Neither of them ____ (make) in China.
两条直线被第三条直线所截,如图所示,图中∠1的内错角是( )