只要原煤可选性变化不大，分配曲线的形状与原煤可选性（）
A.无关或相关性不大
B.相关性大
参考答案：A
—If our parents listened to us more, they would understand us better.
—_______, but unfortunately they just expect us to do what we are told to.
A．I believe not
B．I can’t agree more
C．Good idea
D．No problem
园艺防治
