How many times can 19 be subtracted from 27?
问题描述:
How many times can 19 be subtracted from 27?
A.Once B.Twice C.Three D.None
先翻译,在回答,最好说明一下为什么?
答
27能减19几次?
答案A 一次.
如果不允许负数的话,27-19=8,8就不能再减19了.