哪种治疗不适合
A．免疫治疗B．醋酸环丙孕酮加乙炔雌二醇C．促排卵药物治疗D．IVF-ETE．腹腔镜手术治疗
参考答案：A
My family plans to move into the building that is over there now.
A．being built
B．building
C．to be built
D．been built
一匀质长方形物体重力为G，受水平力P作用，物体与地面间滑动摩擦系数为f，当逐渐加大P时，当（）时，处于临界状态。
A.PhfG
B.Ph>G·b／2，PC.Ph=G·b／2，P=fG
D.以上条件都不对
