According to United States Air Force officials, a cannon : GMAT Sentence Correction (SC)
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# According to United States Air Force officials, a cannon

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Manager
Joined: 23 Jul 2007
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According to United States Air Force officials, a cannon [#permalink]

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09 Aug 2007, 20:54
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According to United States Air Force officials, a cannon shooting dead chickens at airplanes has proved helpful to demonstrate what kind of damage can result when jets fly into a flock of large birds.
(A) shooting dead chickens at airplanes has proved helpful to demonstrate
(B) shooting dead chickens at airplanes has proved itself helpful as a demonstration of
(C) shooting dead chickens at airplanes proves itself helpful as demonstrating
(D) that shoots dead chickens at airplanes proves itself helpful to demonstrate
(E) that shoots dead chickens at airplanes has proved helpful in demonstrating
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09 Aug 2007, 21:03
E

itself is useless, it hasn't proved itself useful, it has helped out in general, so B/C/D are out

The cannon shooting dead chickens hasn't proved helpful - think about it.....

It's the cannon THAT has proved helpful, not the cannon shooting dead chickens...

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09 Aug 2007, 21:05
Not one of the choices but shouldn't it be proven instead of proved.
09 Aug 2007, 21:05
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# According to United States Air Force officials, a cannon

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