____ surprised me most was ______ they h_爱下问搜题

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问题选择题

____ surprised me most was ______ they had finished it so quickly.

A．What, what

B．That, that

C．What, that

D．That, what

答案

答案：C

解答题

（理）设双曲线C：

=1（a＞0，b＞0）的离心率为e，若准线l与两条渐近线相交于P、Q两点，F为右焦点，△FPQ为等边三角形．
（1）求双曲线C的离心率e的值；
（2）若双曲线C被直线y=ax+b截得的弦长为

求双曲线c的方程．

单项选择题

治疗脾瘅的良药是()

A.藿香

B.厚朴

C.砂仁

D.佩兰