14.Have you ever seen ________ big panda before?

问题描述:

14.Have you ever seen ________ big panda before?
  A.a suchB.such aC.so aD.a so

B
such a/an adj.n.
so adj.
也就是说 so修饰的词是形容词或是副词 而such 修饰的是名词