jainrahul1985 wrote:The work of mathematician Roger Penrose in the early 1970s, on the geometry of what are called aperiodic tiles, turned out to describe the architecture of a previously unknown class of crystals.
(A) what are called aperiodic tiles, turned out to describe
(B) what is called aperiodic tiles, describes
(C) aperiodic tiles, describing
(D) so-called aperiodic tiles, describe
(E) aperiodic tiles, it turned out to describe
OA A . how come "describe" agrees with "work"
In B, since
what refers to
tiles (plural), the verb (
is) cannot be singular. Eliminate B.
In C and E, the subject (
the work) lacks a verb. Eliminate C and E.
In D,
describe does not agree with its subject (
the work). Eliminate D.
The only viable answer choice is
A, but I'm troubled. The modifier
on the geometry is quite far from the noun that it modifies (
the work). What is the source of this question?
A few notes:
It is fine to say
THE geometry of X. In this context,
the geometry of means
the shape or relative arrangement of.
In A,
the work is the subject of the verb
turned out.
To describe is the direct object of
turned out. An infinitive can serve as the direct object of a verb:
The players expect to win.
Here,
to win is the direct object of
expect. What do the players
expect? They expect TO WIN.
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