9.Anna was reading a piece of science fiction completely____

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9.Anna was reading a piece of science fiction completely_____ to the outside world.
A.losing B.lost C.to be lost D.having been lost
请分析考点及解题思路

B.还原lose的词组：be lost to 有不再属于…所有,对…无动于衷的意思
这里be之所以省略,是因为lost是过去分词做非谓语的缘故.
解题思路嘛..我的习惯是先判断所填的动词是不是谓语,像这道题,如果是非谓语,先想想有些什么关联的词组,然后判断到底是用现在分词（包括主动）还是过去分词（包括被动）,还是不定式（将来或者目的）,关于非谓语的语法弄清楚就行了.

9.Anna was reading a piece of science fiction completely____ 1.Anna was reading a piece of science fiction,completely ___ Anna was reading a piece of science fiction,completely ___ t Anna was reading a piece of fiction ,completely( losing/lost Ann was reading a piece of science fiction,completely ______ Every piece of science fiction,whether short story or novel, the father of science fiction THE HISTORY OF SCIENCE FICTION怎么样 Why not watching a science fiction film Hundreds of titles of science fiction如何理解? 是science fiction film还是science fiction Anna was reading a book,completely lost to the outside world