题目

下列物质中，含有氧分子的是    A．水   B．液氧 C．氧化汞       D．二氧化碳下列物质中，含有氧分子的是    A．水   B．液氧 C．氧化汞       D．二氧化碳  答案：B解析:略 -----Oh, you said you’d tell me the latest news about environmental situations.   -----Sorry, I_______with my work at hand. I______to that.   A. deal; will come               B. was dealing; come    C. have dealth; have come        D. have been dealing; am coming