Lacking information about energy use, people tend to : GMAT Sentence Correction (SC)
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# Lacking information about energy use, people tend to

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Director
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18 Mar 2006, 08:53
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Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters

A) Equipment, such as lights, that are visible and must be turned on and off and underestimate that
B) Equipment, such as lights, that are visible and must be turned on and off and underestimate it when
C) Equipment, such as lights, that is visible and must be turned on and off and underestimate it when
D) visible equipment, such as lights, that must be turned on and off and underestimate that
E) visible equipment, such as lights, that must be turned on and off and underestimate it when
If you have any questions
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Re: SC # 2 - OG Verbal review [#permalink]

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18 Mar 2006, 09:43
SimaQ wrote:
Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters

A) Equipment, such as lights, that are visible and must be turned on and off and underestimate that
B) Equipment, such as lights, that are visible and must be turned on and off and underestimate it when
C) Equipment, such as lights, that is visible and must be turned on and off and underestimate it when
D) visible equipment, such as lights, that must be turned on and off and underestimate that
E) visible equipment, such as lights, that must be turned on and off and underestimate it when

D. if we notice the red bold phrase above, we can rule-out ABC. E can also be ruled-out because the use of "it" is not clear in E.
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18 Mar 2006, 14:25
d for parallellism

overestimate the amount of energy used by visible equipment and underestimate that used by unobtrusive equipment
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19 Mar 2006, 00:00
Confused between D and E.
'underestimate that used' doesn't sound too good.
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19 Mar 2006, 00:15
Its D

..... equipment,...... unobtrusive equipment...

A,b,C lacks parallel construction. as mentioned above.

E is ackward construction.
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Re: SC # 2 - OG Verbal review [#permalink]

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19 Mar 2006, 01:44
Professor wrote:

D. if we notice the red bold phrase above, we can rule-out ABC. E can also be ruled-out because the use of "it" is not clear in E.

Bingo Professor. Nice explanation. AgreeD
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19 Mar 2006, 02:34
OA is D

OE:

Parallelism + Agreement

This sentence has errors in parallelism and in subject verb agreement. The clause that are visible is not parallel to the adjective unobtrusive. Two kinds of equipment are being contrasted, visible and unobtrusive, so to be parallel (and concise) each adjective should appear directly before the noun it modifies, equipment. The noun equipment is singular and requires a singular verb.
19 Mar 2006, 02:34
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