题目

如图，函数（其中，，） 与坐标轴的三个交点、、满足，， 为的中点，， 则的值为(     ) A．         B．     C．8              D．16 答案：BA short time before she______, the old lady _______ a will, leaving all her money to her brother. A. died; has written     B. has died; wrote C. had died; wrote       D. died; had written