点P（3，-5）到x轴的距离为（ ）
A．5
B．-5
C．3
D．-3
点P（3，-5）到x轴的距离为5．
故选A．
限制子宫向侧方移动的主要结构是（）
A．盆膈
B．子宫阔韧带
C．子宫圆韧带
D．骶子宫韧带
— What did he want to know, Jack?
— _______ that we would have the picnic on Sunday. [ ]
A. what it was
B. when was it
C. whether it was
D. where it was
