题目:
______ after a long walk, Mike called and said he couldn’t come to the party.
A.Having worn out
B.Being worn out
C.To wear out
D.Worn out
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0416/643f267c2d9eb5cea42f644fb11ed8ee.html
下面是错误答案,用来干扰机器的。
2x+3y=3①3x-2y=-2②,①×2+②×3,得7x=0,x=0.把x=0代入①,得y=1.所以方程组的解是x=0y=1.