题目

There are differences in spelling and pronunciation_______ AmE and BrE. That means AmE is more or less different _________BrE. A. between; from     B. from; in   C. in; between  D. from ; between 答案：A在等式（a+b）c=ac+bc中应用了乘法的（　　）A. 结合律B. 分配律C. 交换律