重大突水事故，是指突水量首次达到（）m3/h以上或者造成死亡3人以上的突水事故。
A、100
B、200
C、300
D、400
参考答案：C
The little boy the last bit of toothpaste from the tube.
A．squeezed out
B．squeezed in
C．pushed in
D．pushed out
My coat _______ on the chair and my trousers _______ on the bed. [ ]
A. is; is
B. are; are
C. is; are
