17 Every photograph ,because it involves the light rays that something emits hitting film.must in some obvious sense be true.But because it could always have been made to show things differently than it does.it cannot express the whole truth and in that sense is false.Therefore nothing can ever be definitively proved with a photograph. Which one of the following is an assumption that would permit the conclusion above to be properly drawn? A Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof. B The whole truth cannot be known C It is not ossible to determine the truthfulness of a photograph in any sense D It is possible to use a photograph as corroborative evidence if there is additional evidence establishing the truth about the sense photographed E If something is being photographed ,then it is possible to prove definitively the truth about it.

A怎么翻译？第二个CANNOT是指代那个词？为什么不选D?

任何不能完全展示真实的东西都不能提供决定性的证据。 the second " cannot" refers " whatever".

D actually weakened the conclusion . An asumption should be supportive.