Water ________ hydrogen and oxygen.
举一反三
- Water is ____________ of hydrogen and oxygen.
- Water __________ oxygen (氧) and hydrogen (氢).
- Water is a simple compound of two atoms of hydrogen and one atom of oxygen
- （ ）is a simple compound of two atoms of hydrogen and one atom of oxygen. A: Protein B: Water C: Fat D: Vitamin
- Ice is to water as () A: oxygen is to hydrogen B: snow is to helium C: water is to steam D: road is to path E: ice cream is to popsicle