GMAT - Official Guide 13th Edition - Sentence Correction

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is there a link to download OG13 ?

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@kinji.at.pg1 @scrabbler

Plz have a look.

I am confused whether to use "date back to" or "date back".

A Harvard anthropologist has proposed that using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having a large brain and small teeth.

A. using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having 

B. the use of fire to cook food could date back almost two million years and could explain such hominid features as

C. cooking food with fire could date back to almost two million years, explaining hominid features like

D. fire used to cook food could date back almost two million years, explaining hominid features such as having

E. fire used for cooking food could be dated back to almost two million years and explain hominid features like



a
b
c
d
e
BRANDED FOR LIFE-- WIMWIAN
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Although the listening audience of satellite radio amount to a number lower than one percent of the terrestrial radio audience, radio station owners mounted to a lawsuit last year to prevent the merger of two satellite radio behemoths.

http://www.manyagroup.com/
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kinji.at.pg1
@kinji.at.pg1Tepper Pittsburgh  ·  30,873 karma

Less or lower is the decision factor. Option C or D. Rest of the options can be easily eliminated.

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swaetha
@swaetha  ·  0 karma

It is referring to audience. Wont we use Fewer?

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Guys please suggest what is the latest edition of GMAT Official Guide?

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kinji.at.pg1
@kinji.at.pg1Tepper Pittsburgh  ·  30,873 karma

My friend has checked it. No difference between OG 13 and 2015. :) 

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kravindran7
@kravindran7  ·  0 karma

😃

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The coloration of insects can serve as camouflage, as in the case of green insects that spend their lives in or near foliage, or to warn predators, as in the case of insects colored in yellow and black, which often signals that it is poisonous

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ShreyaB
@ShreyaB  ·  0 karma

option d is wrong because " as a predator's warning". thats what i thought was wrongly put. ( change of meaning) . option E is wrong because it doesnt hold with the flow. (it serves as A and B ) .  C is grammatically correct. 

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amit7808
@amit7808  ·  0 karma

---I found a good parallism explanation ---

"as camouflage, as in the case" is parallel to "as a warning to predators, as in the case" -- which is the only reason why C is correct. In E , "to warn predators, as in the case" is not parallel to "as camouflage, as in the case"

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Posting some challenging Questions in SC. these are questions in that appear mostly in the score range is 700+. Trust it helps all here :) 


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The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.
core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field
core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction
responsible for advancing studies of the flow of heat from the inner through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field
core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction
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wat is gmat ??


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kinji.at.pg1
@kinji.at.pg1Tepper Pittsburgh  ·  30,873 karma

GMAT is Graduate Management Aptitude test : More : 

http://www.mba.com/india/the-gmat-exam.aspx

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Manufacturers rate batteries in watt-hours; if they rate the watt-hour higher, the longer the battery can be expected to last.

if they rate the watt-hour higher, the longer
rating the watt-hour higher, it is that much longer
the higher the watt-hour rating, the longer
the higher the watt-hour rating, it is that much longer that
when the watt-hour rating is higher, the longer it is
Tepper School of Business - Carnegie Mellon University, Class of 2017 - GMAT 760
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In a review of 2,000 studies of human behavior that date back to the 1940s, two Swiss psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size, none could be taken seriously.

psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size,
psychologists, declaring that most of the studies failed in not controlling for such variables like social class and family size, and
psychologists declared that since most of the studies, having failed to control for such variables as social class and family size,
psychologists declared that since most of the studies fail in controlling for such variables like social class and family size,
psychologists declared that since most of the studies had failed to control for variables such as social class and family size,
Tepper School of Business - Carnegie Mellon University, Class of 2017 - GMAT 760
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