A、CO<sub>2sub>+H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O B、CO<sub>2sub>+2S→CS<sub>2sub>+O<sub>2sub> C、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+H<sub>2sub>O D、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O