题目

（1） 求值： ； （2） 已知 ， ，求 的值. 答案：解： 80.25×24+(116)−12 =(23)14×214+[(16)-1]−12 =234+14+16 =6 54m−3n =54m⋅5−3n =(5m)4⋅(5n)-3 =24⋅3-3=1627I think you two, _______Tom, ______ the broken glass. A．rather than; are to blame forB．rather than; is to be blamed forC．other than; is responsible forD．more than; are blamed for