题目

已知反应:2CO(g)=2C(s)+O2(g)。设△H和△S不随温度而变，下列说法中正确的是(  )     A．低温下是自发反应                        B．高温下是自发反应 C．低温下是非自发反应，高温下是自发反应     D．任何温度下都是非自发反应 答案：D 解析: 略When I finished the story, Lenin jumped up from his chair and started pacing the floor, ______, deep in thought.     A.with his head bending                 B.in his head bent     C. his head bending                    D. his head bent