在甲午中日战争中全军覆没的是清政府的哪支舰队 [ ]
A、北洋舰队
B、福建舰队
C、南洋舰
D、长江舰队
答案：A
关于x的方程（m2-3m+2）xm2+1+5x-6m=0是一元二次方程，则m=______．
May I take this book out of the reading room?
No, you _____. You read it in here. [ ]
A. mightn't
B. won't
C. needn't
D. mustn't
