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Re: Transparent invention [#permalink]
04 Oct 2009, 17:51
Scientists have created a new substance that is so transparent as to be almost invisible.
A. so transparent as to be B. so transparent it has been C. so transparent that it was D. transparent enough that it is E. transparent enough so as to be
Let me give a shot after a while:
A. This question tests the idiom. The correct idiom form is " so x as to be y" i.e. in A. B. It violets the the correct idiom form. C. It also violets the the correct idiom form. D. Its not in idiom form. E. It is also not in a correct form. "so as to be" is never correct.