单项选择题 细胞色素P450酶系在体内存在的位置，主要是 A、肝微粒体 B、细胞浆可溶部分 C、线粒体中 D、血浆中

判断题 失业保险金标准应当低于本市当年最低工资标准、高于本市当年城镇居民最低生活保障标准。 A、正确 B、错误

单项选择题 In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D).A、For competition. B、For fun. C、For transportation. D、For exercise.