The World Heritage Convention stipulates that the country where the World Heritage is located must guarantee the authenticity and integrity of the heritage. The function of the World Heritage, the first layer is scientific research, the second layer is educational function, and finally the tourism function. Many places are gradually Corrected, but there are still many unsatisfactory things. What can't we deduce from this text? ['The country where the world heritage is located should properly protect the world heritage.', 'The most valuable value of World Heritage is its scientific research value.', 'There are still many violations of the World Heritage Convention.', 'All countries where World Heritage sites are located place too much emphasis on their tourism functions.']