chaitanya.mehrotra wrote:Question: 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
Guys give explanations for your choices.OA A
In B,
has been (present perfect) should be in the same tense as
is (present). Eliminate B.
In C,
was (past) should be in the same tense as
is (present). Eliminate C.
In E,
enough so as to be is not idiomatic. Correct idioms include
X enough to Y and
so X as to be Y. Eliminate E.
In D,
enough that is a construction to be avoided on the GMAT. The preferred idiom is
enough TO. Also,
enough does not convey the intended meaning of the original sentence:
SO transparent means
unusually or extremely transparent;
transparent enough means
sufficiently transparent. Eliminate D.
The correct answer is
A.
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