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# According to United States Air Force officials, a cannon

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Manager
Joined: 24 Jul 2007
Posts: 196

Kudos [?]: 7 [0], given: 0

According to United States Air Force officials, a cannon [#permalink]

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09 Aug 2007, 21:54
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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.
(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

Kudos [?]: 7 [0], given: 0

Director
Joined: 31 Mar 2007
Posts: 574

Kudos [?]: 77 [0], given: 0

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09 Aug 2007, 22:03
E

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

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

Clear E.

Kudos [?]: 77 [0], given: 0

Manager
Joined: 24 Jul 2007
Posts: 196

Kudos [?]: 7 [0], given: 0

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09 Aug 2007, 22:05
Not one of the choices but shouldn't it be proven instead of proved.

Kudos [?]: 7 [0], given: 0

09 Aug 2007, 22:05
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