The List of World Heritage in Danger places sites subject to unusual levels of pollution， natural hazards， or other problems， until（）are made.
The List of World Heritage in Danger places sites subject to unusual levels of pollution， natural hazards， or other problems， until（）are made.
A.paperwork
B.nothing
C.proposal
D.improvement
正确答案：improvement
Tag：旅游英语
时间：2024-01-04 21:37:00