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Excel工作表B列保存了11位手机号码信息,为了保护个人隐私,需将手机号码的后4位均用"*"表示,以B2单元格为例,最优的操作方法是:( )
·=REPLACE(B2,7,4,"****")
·=REPLAICE(B2,8,4,"****")
·=MID(B2,7,4,"****")
·=MID(B2,8.4,"****")
·=REPLACE(B2,7,4,"****")
·=REPLAICE(B2,8,4,"****")
·=MID(B2,7,4,"****")
·=MID(B2,8.4,"****")
参考答案