下列方程中，解为x=3的方程是[ ]
A.3x=x+3
B.x+3=0
C.x+1=2x+3
D.x-3=0
答案：D
脾囊肿
A.轻度脾肿大
B.中度脾肿大
C.高度脾肿大
D.脾肿大表面囊性感
E.脾触诊有摩擦感及压痛
Look! There is a girl __________ the music over there.
A．dancing to
B．dances to
C．dance to
D．dancing with
