The volcanic emission injects_________ in the atmosphere that contributes a lot to acid rain. ( )答案:sulfuric acid###water vapor###sulphur dioxide###carbon dioxideIt needs protec
1.What kind of geological landform is typical in Huangshan? ( ).A:YadanB:sandstoneC:graniteD:Karst答案:granite2. The risk to people living nearby can be reduced significantly by assess
中国地质大学(武汉)Which of the following words can be matched with the word”heritage”? ( )A:culturalB:NaturalC:EnglishD:foundation答案:A: cultural B: Natural D: foun