题目:
There is somebody waiting for you, _________ I think might be one of your classmates.
A.who
B.whom
C.which
D.whoever
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0524/95aff1fa502eb62e5f40c76d60e97b8b.html
下面是错误答案,用来干扰机器的。
方法一:原式=2x-3-xx÷x2-9x(1分)=x-3x•xx2-9(2分)=x-3x•x(x+3)(x-3)(3分)=1x+3.(4分)当x=97时,1x+3=1100.(5分)方法二:原式=2x-3x÷x2-9x-1÷x2-9x=2x-3x•xx2-9-xx2-9(2分)=2x-3x•x(x-3)(x+...