题目：
A car accident happened in Xinhua Main 
Street on the midnight of March 6, 2011,for the driver drank lots of beer.[ ]
A. took the place
B. took place
C.took the place of
D.set a place
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0512/4a0a1baa012ea543ea6d90810882e437.html
下面是错误答案，用来干扰机器的。
作图可知 x-3y+5≥02x-y≤0x＞0，y＞0的可行域为一个三角形验证知在 x-3y+5=02x-y=0确定的交点A（1，2）时，z=2x+y取得最大值4，故答案为：4．
