48. In the Chinese household, grandparents and other relatives play ________ roles in raising children. (A)) incapable (B)) indispensable (C)) insensible (D)) infinite

30. It can be inferred from the passage that ________. (A)) killing foxes with poison is illegal (B)) limiting the fox population is unnecessary (C)) hunting foxes with dogs is considered cruel and violent (D)) fox-hunting often leads to confrontation between the poor and the rich