题目内容：

两题非谓语,求讲解.
①She had a very（ ）when she heard the news.
A.disappointed look
B.disappointing look
C.disappointed appearance
D.disappointment look
这四项我都糊里糊涂的,求逐项分析.但我选B.我是这样理解的,look?不就是样子的意思,是事物啊,应该用ing啊,为什么还选A?
②It was so （ ）a poem that quite a few students were（ ） to tears.
A.moved；moved
B.moving；moving
C.moving；moved
D.moved；moving
求讲解.还有句子的最后 to tears.是什么语法?