解目标规划的单纯形法时，当存在两个或以上相同的最小比值此一时，选（）优先级别的变量为换出变量。
参考答案：较高
（2014山东省实验中学高三第二次模拟考试）2．—I’m going to take a gap year before I go to college．What about it?
—____________ You are no longer achild．
A．Take your time．
B．Make yourself at home．
C．Just as you wish．
D．Don’t mention it．
I don't like dancing because it's too . [ ]
A.interesting
B.difficult
C.exciting
D.relaxing
