RESPONSIBLE CONDUCT OF RESEARCH

学校要求做RESPONSIBLE CONDUCT OF RESEARCH，是在citiprogram.org在线做，The CITI Program is a subscription service providing research ethics education to all members of the research community. To participate fully, learners must be affiliated with a CITI participating organization.要求要70分，请问以前有没有人做过，难吗？有时间限制吗？