Read the following passage and choose the best answer for each question

UNESCO has recognized the 82 Doctors’ stone tablets as a Memory of the World. They are inscribed with the names of 2,313 doctorate holders who passed the royal examinations between 1442 and 1780. The stone tablets, which bear the name of Trang Nguyen, Bang Nhan, Tham Hoa, and Hoang Giap (the first, second, third, and fourth winning categories of the royal examinations), sit on the backs of stone turtles.

These stone tablets are different from those in other Asian countries, including China which has influenced Viet Nam feudal education. The decoration on Viet Nam’s stone tablets were more diverse.

By naming Viet Nam’s stone tablets as a Memory of the World, UNESCO acknowledges Viet Nam’s efforts to preserve and promote heritages to international community. The recognition would also help to raise the awareness in heritage preservation.

UNESCO has recognized the 82 Doctors’ stone tablets as the World Heritage.