题目

 ______ in a top-level university abroad is what many students wish for.    A. Educated      B. Being educated   C. To educate D. Educating 答案：B下列关于物质的分类正确的是A.酸性氧化物：SO2  Mn2O7  NOB.碱性氧化物：Na2O  Na2O2  Al2O3C.盐：Na2CO3  2CaO·SiO2  Na[Al(OH)4]D.电解质：SO3  Na2O  BaSO4