A:滴入甲基橙显红色的溶液中: Na+、NO3-、I-、SO42-
B:水电离出的c(H+) =10-12mol/L中:K+、AlO2-、CH3COO-、SiO32-
C:c(OH-)/c(H+)=1012的水溶液中:K+、ClO-、S2-、Cl-
D:c(F-) =0.1 mol/L的溶液中:Fe3+、NH4+、NO3-、Cu2+
—I'm sorry but I'm afraid I can't go to your party tonight.
—Never mind. Maybe _______ time.
选择正确的读音。
熊____(xóng xióng) 怎____(zhěn zěn)
今____(jīn jīng) 不____(bù pù)
-13的绝对值是( )