A:弹簧秤的示数是26 N
B:弹簧秤的示数是50 N
C:在突然撤去F2的瞬间,m1的加速度为2m/s2
D:在突然撤去F2的瞬间,m2的加速度为14m/s2
My sister likes playing the guitar, but she can't play ______.