自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
N-PLURAL 道德规范;伦理 Ethics are moral beliefs and rules about right and wrong.
Its members are bound by a rigid code of ethics which includes confidentiality...
Refugee workers said such action was a violation of medical ethics.
N-PLURAL （个人信奉的）道德原则 Someone's ethics are the moral principles about right and wrong behaviour which they believe in.
It is common to distinguish between personal and social ethics...
He told the police that he had thought honestly about the ethics of what he was doing.
N-UNCOUNT 伦理学 Ethics is the study of questions about what is morally right and wrong.
...the teaching of ethics and moral philosophy.
N-SING 道德规范；伦理标准 An ethic of a particular kind is an idea or moral belief that influences the behaviour, attitudes, and philosophy of a group of people.
...the ethic of public service.
...an indomitable work ethic and determination to succeed.