第6题: [单项选择]循环链表的主要优点是( )。 A. 不再需要头指针了 B. 已知某个结点的位置后,能够容易地找到它的直接前件 C. 在进行插入、删除运算时,能更好地保证链表不断开 D. 从表中任一结点出发都能访问到整个链表 参考答案:D 答案解析:[解析] 循环链表就是将单向链表中最后一个结点的指针指向头结点,使整个链表构成一个环形,这样的结构使得从表中的任一结点出发都能访问到整个链表。
第32题: [单项选择]She had recently left a job and had helped herself to copies of the company's client data, which she intended to ______ in starting her own business. A. dwell on B. base on C. draw upon D. come upon 参考答案:C 答案解析:draw upon作“利用”讲,例如:Solar energy should be drawn on in this area to generate electricity for houses.这