题目

已知热化学方程式：         H2O(g)＝H2(g) + 1/2O2(g)       △H = +241.8kJ／mol         H2(g)+ 1/2O2(g) ＝ H2O(1)      △H = －285.8kJ／mol   当1g液态水变为水蒸气时，其热量变化是（   ）   A．吸热88kJ       B． 吸热2.44KJ    C．放热44kJ       D． 吸热44KJ 答案：BIn my point of view, the question is not _____ the world is going to have a new economic crisis, but when.A.thatB.howC.whatD.whether