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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Senior Manager
Joined: 19 Oct 2004
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According to United States Air Force officials, a cannon [#permalink]

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23 Nov 2004, 07:45
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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.
(B) shooting dead chickens at airplanes has proved itself helpful as a demonstration of
(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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Director
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23 Nov 2004, 08:16
THis stem looks like a general principle : "According to United States Air Force officials". Knowing that present looks better than any past tense.

Between C & D, helpful to demonstrate is better than helpful as demonstrating (to the numerous gurus, if the possible answer was "in demonstrating" what would be the best choics between modified C & D ?)
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23 Nov 2004, 08:51
Twixt,

If I had to choose between C and D I would go for D.
Shoots is // to Proves
2. But To demonstrate just doesn't sound right...
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23 Nov 2004, 10:21
The phrase 'a cannon........ proves itself helpful to demonstrate ' in 'D' makes it sound like the cannon itself will demonstrate the kind of damage that can result. It totally alters the intent of the original passage.
So, I will go with 'E', which uses 'in demonstrating'.
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23 Nov 2004, 11:11
The OA is E. Thanks rthothad, got it.
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