人民调解委员会是调解民间纠纷的群众性组织。它不属于司法部门，也不属于行政机关。
参考答案：对
Mrs. Green is mother. They are . [ ]
A. Lucy and Lily's; twins
B. Lucy's and Lily's; twins'
C. Lucy and Lily's; twin
D. Lucy's and Lily's; twins
视黄醇是维生素A在体内吸收代谢后最具生物活性的产物。( )
