In Hatch No.3 lower hold there are a lot of materials for dunnaging，（）paper，nets，planks and tapes.

_________ doesn’t belong to fitness exercises. A: running B: badminton C: planks D: medical treatment sports

Which of the following statement is wrong?____________ . A: The machines are usually delivered by forwarding agents. B: Unscrew machine from wooden planks. C: Outside storage is strongly recommended D: A special concrete base is unnecessary.