下边选项中体现朝鲜族民居特征的是
① 外墙颜色多为白色 ② 外墙颜色多为自然色 ③ 围栏高度高 ④ 围栏高度矮 ⑤ 火炕高度高 ⑥ 火炕高度矮
Among the options below, the dwelling characteristics of Korean Chinese are
① outer wall is mostly white ② outer wall is mostly natural color  ③ height of the fence is higher ④ height of the fence is lower ⑤ the height of the heatable brick bed is high ⑥ the height of the heatable brick bed is low