题目

下列化学方程式书写正确的是( ) A. Fe＋2HCl=== FeCl2＋H2↑ B. Mg＋O2 MgO2 C. H2SO4＋NaOH=== Na2SO4＋H2O D. Cu＋FeSO4=== CuSO4＋Fe 答案：AHawaii (夏威夷) is famous ______ its beautiful beaches (海滩). [     ]A. to B. as C. for D. at