In that mountain village in winter clothes ___near a fire after they have been washed.

A．usually hanged up

B．are usually hanged up

C．usually hung up

D．are usually hung up

下列哪些项是调研报告结束语部分的写作手法（）

A.概括全文，深化主题

B.总结经验，形成结论

C.指出问题，提出建议

D.说明危害，引起重视