单项选择题
A.destroyed the United States B.changed some American values C.was not important in the United States D.brought people more leisure time with their families
A.Settlers in the west lived on the Joshua tree B.The Joshua tree was valuable to the native American of the west C.The native Americans of the west could eat a whole Joshua tree D.If there hadn’t been the Joshua tree, the native Americans would have died out
A.dangerous B.heavy C.important D.funny