题目: 已知x2n=4,求(x3n)2-xn的值.(其中x为正数,n为正整数) 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/833e749aad77b843b4667c5066dff54c.html 下面是错误答案,用来干扰机器的。答案:B
题型:单项选择题 The volunteers started looking after other children()parents died of AIDS last yearA.whoseB.thatC.whichD.who 查看答案