题目

24．When Tom was very young ,he was ______ skateboarding, ______worried his parents a lot. A．in; that     B．into; which      C．fond of; that     D．like; which 答案：B下列反应中属于中和反应的是(    ) A.Na2CO3＋2HCl== 2NaCl＋H2O＋CO2↑     B.2NaOH＋H2SO4== Na2SO4＋2H2O C.SO2＋2NaOH== Na2SO3＋H2O             D.Zn＋CuSO4===ZnSO4＋Cu