题目

On my way to school, I realized that I had ______ my school bag at home. A. left          B. forgotten      C. lost        D. missed   答案：A某反应2A（g）+B（g）C(g)+3D(g)在高温时能自发进行，其逆反应在低温下能自发进行，则该反应的ΔH、ΔS应为 [     ]A．ΔH ＜0，ΔS＞0B．ΔH ＜0，ΔS＜0C．ΔH ＞0，ΔS＞0D．ΔH ＞0，ΔS＜0