A:(3)(2)(1)
B:(3)(1)(2)
C:(2)(1)(4)
D:(4)(1)(2)
如图所示,轻质弹簧下端挂重为30N的物体A,弹簧伸长了3cm,再挂重为20N的物体B时又伸长了2cm,若将连接A和B的连线剪断,使A在竖直面内振动时,下面结论正确的是( )
Hundreds of football fans were t____ away from the stadium because it was full.