Article 267 of the Criminal Procedure Law revised on 20 12 stipulates: "If a juvenile criminal suspect or defendant fails to appoint a defender, the people's court, the people's procuratorate and the public security organ shall notify the legal aid institution to appoint a lawyer to defend him." Therefore, item A is correct. According to article 4, paragraph 1 of the Supreme People's Court's Interpretation on Several Issues Concerning the Specific Application of Laws in the Trial of Juvenile Criminal Cases, "if there is insufficient evidence to prove that the defendant has reached the legal age of criminal responsibility when committing the alleged crime and it is really impossible to find out, it shall be presumed that he has not reached the corresponding legal age of criminal responsibility." So item b is correct. Article 18, paragraph 1 of this interpretation stipulates: "The commutation and parole of juvenile criminals may be appropriately relaxed according to law when mastering the standards." Item c is correctly stated. According to Article 270 of the Criminal Procedure Law revised by 20 12, "In a juvenile criminal case, the legal representative of the juvenile criminal suspect or defendant shall be notified to be present at the interrogation or trial. If the legal representative is unable to be present, or the legal representative is guilty of * * *, the other adult relatives of the juvenile criminal suspect or defendant, his school or unit may also be notified to be present. The legal representative present may exercise the litigation rights of juvenile criminal suspects and defendants on his behalf. If the legal representative or other persons present believe that the case-handling personnel have infringed upon the legitimate rights and interests of minors during interrogation and trial, they may make comments. The interrogation record and the court record shall be handed over to the legal representative or other persons present for reading or reading. When interrogating female juvenile criminal suspects, there should be female staff present. In the trial of juvenile criminal cases, after the juvenile defendant makes his final statement, his legal representative may make supplementary statements. The provisions of paragraphs 65-438+0, 2 and 3 shall apply to the questioning of juvenile victims and witnesses. " Therefore, item D is wrong. To sum up, item d of this question was elected.