中国是世界上邻居最多的国家,陆界长2万多千米,下列不属于陆上邻国的有( )
中华民族精神的核心是 ()
需经过称量、溶解、转移、定容等操作.下列图示对应的操作规范的是( )
Carol doesn't know what she should take for her trip. (改为同义句)
Carol doesn't know____ ____ ____for her trip.