问题详情

To better protect the Archaeological Patrimony, the author proposes that
A．each site be classified into a category and a plan be made for its protection.
B．measures be taken to control possible negative agents and activities.
C．new regulation be made in accordance with urban development plans.
D．specific regulation be made to protect each site and its surroundings.请帮忙给出正确答案和分析，谢谢！