A:能被酸性高锰酸钾溶液氧化
B:能发生缩聚反应
C:能发生水解反应
D:能与溴水发生加成反应
关于电压,下列说法正确的是( )
Grace doesn't like math because she thinks it is ________.
据记载,宋代一个海商一次贩运的货物常达十万斤以上,价值高达数十万贯。中国商人和商船取代波斯成为中外贸易的主导力量。材料反映了宋代 ( )
— My cousin is good at all his subjects at school, but he never ________.
— What a ________ boy! We should learn from him.