① ____ A.mountain B.coat C:know D.goat
② ____ A.horse B.fork C.word D.story
③ ____ A.word B.world C.work D.pork
④ ____ A.take B.wall C.fall D.tall
⑤____ A.class B.afternoon C.basketball D.happy
俄罗斯海港摩尔曼斯克濒临北冰洋,是不冻港的原因是( )