Aerugo

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Aerugo

by sl750 » Sat Sep 03, 2011 10:16 am
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
"¢ visible on many copper items, and is produced
"¢ that is visible on many copper items, and which produces
"¢ visible on many copper items, and produces
"¢ that is visible on many copper items, and that produces
"¢ which is visible on many copper items, and which is produced

I am not able to figure out what is being tested here
Source: — Sentence Correction |

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by GmatKiss » Sat Sep 03, 2011 11:39 am
sl750 wrote:Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
"¢ visible on many copper items, and is produced
"¢ that is visible on many copper items, and which produces
"¢ visible on many copper items, and produces
"¢ that is visible on many copper items, and that produces
"¢ which is visible on many copper items, and which is produced

I am not able to figure out what is being tested here
IMO:A

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by crick » Sat Sep 03, 2011 6:55 pm
+1 for A.

A maintains parallelism between the two parts.

Aerugo is the green "bloom" .... and is produced ....

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