题目

______ Nancy likes best about college is that she can meet people from all over the country．     A. Where          B．When           C．That           D．What 答案：D16．已知双曲线${x^2}-\frac{y^2}{24}=1$的左右焦点分别为F1，F2，点P为双曲线左支上一点，且$|P{F_1}|=\frac{3}{5}|{F_1}{F_2}|$，则△PF1F2的面积是24．