AA级旅游景区阿里河国家森林公园素有什么之称？
参考答案：
阿里河国家森林公园“花的世界、林的海洋、河的源头、云的故乡”之称。
The girl can't be Mary, for she _____. [ ]
A. has been to London
B. has gone to Paris
C. was going to London
D. had gone to Paris
堤防发生管涌的抢护原则是“（），制止涌水带出泥沙”即“导水抑沙”。
