从理论上讲，创业是指在资源完备情况下，寻找机会进行价值创造的一种资源整合活动。
参考答案：错
下列命题的逆命题中是假命题的是（ ）
A．有一个内角等于60°的等腰三角形是等边三角形
B．对顶角相等
C．线段垂直平分线上的点到这条线段两个端点的距离相等
D．到角的两边距离相等的点，在这个角的平分线上
My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.
A．studied
B．has studied
C．had studied
D．has been studying
