题目

 --- How do you like your college life?  ---Terrible．Not only ____less spare time, but ____myself even busier than before．      A．do I enjoy; do I find              B．I enjoy; I find      C．do I enjoy; I find                 D．I enjoy; do I find 答案：C把“对顶角相等”写成“如果……那么……”的形式是                                         。