题目

   Going Green Green is no longer just a color. It is a new way of thinking about the world and a way of living your life. It’s catching on all over the world. More and more people decide to “go green” because they know that we only have one planet to live on. We won’t be able to live on it much longer if we keep wasting energy, and destroying(破坏) our home with air, land, and water pollution. “Green Living” means: Understanding that your choices affect(影响) not just you, but everybody everywhere. Understanding that your choices affect not just today, but the future.下列对于化学式“H20”的各种表述不正确的是(       )A．表示水这种物质B．表示水分子由氢元素和氧元素组成C．表示1个水分子D．表示1个水分子由2个氢原子和1个氧原子构成