题目

May the first is an important date in the college admission process in the United States．This is the last day for high school seniors to accept or reject offers of admission in the fall．But according to a recent report, there is a great change. Acceptance rates at the top colleges this year were lower than ever.   1  These days, college applicants are applying to more colleges because online and common applications make the process easier.   2   On the other hand, deciding students for top colleges to accept can be difficult because it takes much time. Students may not like being p考察正方体6个面的中心，甲从这6个点中任意选两个点连成直线，乙也从这6个点中任意选两个点连成直线，则所得的两条直线相互平行但不重合的概率等于 （A）      （B）      （C）    （D）