题目

将下列离子方程式改写成化学方程式，正确的是( ) A．Cu2＋＋2OH－===Cu(OH)2↓      CuCO3＋2NaOH===Cu(OH)2↓＋Na2CO3 B．CO＋2H＋===H2O＋CO2↑      BaCO3＋2HCl===BaCl2＋H2O＋CO2↑ C．Ca2＋＋CO===CaCO3↓         Ca(OH)2＋BaCO3===CaCO3↓＋Ba(OH)2 D．H＋＋OH－===H2O               2KOH＋H2SO4===K2SO4＋2H2O 答案：DNobody would stand out admitting the fact, for some reason____ they lost the game. [     ]A. that B. which C. whatD. why