函数y=21-x+2x+1的最大值为______. 发布时间:2017-04-26 11:41 │ 来源:www.tikuol.com 题型:填空题 问题: 函数y=21-x+2x+1的最大值为______.
题型:填空题 There is _______ old hotel near here. ________ hotel is next to the supermarket. [ ]A.a; A B. an; A C. an;The D. the;THE 查看答案