A.叢林、樹(shù)林和森林B.樹(shù)叢、樹(shù)林和森林C.樹(shù)叢、樹(shù)林和樹(shù)群D.叢林、樹(shù)林和樹(shù)群
A.汀步B.散步小道C.漫步小道D.游步道
A.4~5個(gè)B.3~4個(gè)C.2~5個(gè)D.1~2個(gè)