题目

In total, 841 people, _______ China's first astronaut Yang Liwei and shooting gold medalist Xu Haifeng, will carry the torch ______ turn in Beijing after the relay finishes its leg in the   quake-battered Sichuan Province. A．included; in               B．included; by            C．including; by            D．including; in 答案：D对下列物质进行分类．A、空气    B、氧化汞    C、过氧化氢   D、自来水   E、液氮   F、氯化钠  G、硫磺   H、蒸馏水  L、石灰水  J、水银（1）混合物（填序号） （2）化合物（填化学式） （3）单质（填化学式） ．