On the day of our final exam at my Community College in Santa Maria, Calif., we heard that the bookstore had changed its policy and would buy back our business-management textbooks. Before class, several of us dashed over to the store and sold our books. We were seated and waiting for the test when our professor announced that considering the difficulty of the final, it would be an open-book exam.我在加利福尼亚的圣玛丽亚市一所社区大学读书。期末考试那天，听说书店在回购我们的工商管理课本。考试前，我们几个赶忙跑到书店把书卖了，随后，我们坐在教室里等着考试。这时候教授宣布：考虑到试题的难度，今天的考试我们决定开卷。