Anna was reading a piece of science fiction,completely ___ to the outside world.

Anna was reading a piece of science fiction,completely ___ to the outside world.

题目
Anna was reading a piece of science fiction,completely ___ to the outside world.
Anna was reading a piece of science fiction,completely _D__ to the outside world.
A、having been lost B、 to be lost C、losing D、 lost
为什么不能选C呢,D和C的区别在哪啊?
答案
lost表完成,应经完全的沉醉在书里了.losing则表正在迷失,正在与外界失去联系,不符合.
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