根据以下材料，回答1-20题
Chief Justice John Roberts Jr. tried to address growing concerns about ethical behavior and conflicts of interest on the Supreme Court in his annual report on the federal judiciary.But he 1 the heart of the problem：the justices are the only American judges not 2 by a code of ethics.
He 3 criticism that justices are 4 from the Judicial Conference's Code of Conduct,contending that they do "consult" the code,which "plays the same role" for the court as it does for other federal judges.
But he 5 the code's authority. 6 a justice can ignore the code, all other judges must obey it.If the Supreme Court is serious about 7 an ethics code, there are ways for it to do so without influencing the court's independence and its 8 role.
9 , the justices should 10 to explaining in written opinions any decisions they make to deny 11 for their recusal,12 on the most sensitive and confidential issues.They could also 13 adopt the judicial conduct code as they work to adapt it.
14 the court takes these steps, there will be 15 concerns about the justices' impartiality.It is not enough for the justices to 16 on their own "constant vigilance and good judgment", as Chief Justice Roberts contends.It is insincere for him to claim that "no 17 of ethical rules can guarantee integrity" 18 no code currently applies to the court.Adopting a conduct code would 19 the rules that apply to the justices and greatly 20 public confidence in the court.
第1题答案是

A acknowledged

B skirted

C denounced

D struck