题目

Large quantities of information, as well as some timely help ________ since the organization was built. A . has offered B . has been offered C . have offered D . have been offered 答案：D某班举行文艺晚会，桌子摆成两条直线（如图中的AO，BO），AO桌面上摆满了桔子，BO桌面上摆满了糖果，坐在C处的学生小明先拿桔子再拿糖果，然后回到座位，请你帮助他设计一条行走路线，使其所走的总路程最短？（尺规作图，并写出作法）