胎盘早剥出血发生在（）
A.底蜕膜
B.包蜕膜
C.绒毛膜
D.胎盘边缘血窦
E.子宫螺旋动脉
参考答案：A
地球的自转产生了（ ）
A．昼夜交替
B．四季变化
C．地球的五带
D．昼夜长短的变化
Were all three people in the car injured in the accident? No,___ only the two passengers who got hurt.
A．it was
B．there is
C．it were
D．there was
