问答题 翻译：I called the police for help after my car broke down on the freeway.Twenty minutes later，they came to my rescue.

单项选择题 女性，人工流产后4个月，无月经来潮，子宫大小正常，用雌激素、孕激素治疗无撤退性出血。最可能为( )A．卵巢性闭经 B．子宫性闭经 C．垂体性闭经D．丘脑下部性闭经 E．妊娠

问答题 翻译：There needs to be someone who can act as a champion for the rights of the poor because the system so easily lends itself to abuse.