题目内容：

—What are on show in the museum?--Some photos___(take)by the children of Yushu,Qinghai.
A.have been taken B.were taken C.are taken D.taken

优质解答

选择D 回答是个省略回答 全句是 Some photos taken by the children of Yush u Qinghai are on show为什么这么说呢 我们要看问句问的是什么.taken 是photos 的定语 表示被动完成