题目

（﹣3）0等于（ ）A．0B．1C．3D．﹣3 答案：【答案】B【解析】根据任何不为0的数的零次幂都等于1，可得答案．解：，故选：B． ---I haven’t seen you for hours.Where have you been? ---______ [　　] A．Yes,I am busy. B．Neither have I.And you? C．I haven’t seen you,either. D．I’ve been visiting a friend of mine.