A:Ca(HCO3) 2(aq)与Ca(OH) 2(aq)
B:Ca(HCO3) 2(aq)与NaOH(aq)
C:NaHCO3 (aq)与Ca(OH) 2(aq)
D:Mg(HCO3) 2(aq)与NaOH (aq)
My father is a teacher. He loves________ students very much.
95-53=____