阅读后请回答：
材料一：颜渊问仁，子曰：“克已复礼为仁，一日克已复礼，天下归仁焉。”颜渊曰：请问其目，子曰：“非礼勿视，非礼勿听，非礼勿言，非礼勿动。”            《论语·颜渊》
材料二：认为一切事物都有对立面，如难和易，对立双方互相转化，还主张“无为”。
材料三：主张实行“仁政”，要求统治者轻徭薄赋，还提出“民贵”“君轻”思想。
材料四：主张“法治”，强化中央集权和君主权力，用严酷刑罚镇压人民反抗，以维护国家统治。
（1）材料一中的“子”是指谁？他的思想核心是什么？
（2）分别写出材料二和材料三的代表人物及学派。
（3）当时各派思想家都四处游说，但大多未受到重用。材料四是谁的主张受到秦国统治者的青睐？（写出代表人物及学派）

    In a small village, there is a teacher, a doctor, a driver, and a policeman. The four men are good friends. What are their names？One is Tom, one is Jack, one is Mike and one is John. Mike's, Jack's and Tom's children are classmates. John has no children. He teaches his friends’children at a middle school. Mike works at a police station. He loves his job very much. Jack has a car. He often drives his car to go to work or visit his friends. The doctor's house is next to the driver's, so the children often play together.

2014年1月6日,最高人民检察院发布修订后的《人民检察院办理未成年人刑事案件的规定》,明确人民检察院根据情况可以对未成年犯罪嫌疑人的成长经历、犯罪原因等情况进行调查,并制作社会调查报告,作为办案和教育的参考。这一规定(  )