Voyager 2

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Voyager 2

by gmat740 » Sun Jun 21, 2009 7:34 am
740.
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.


(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart; it is that of

[spoiler]OA-b(why D is wrong?)[/spoiler]
Source: — Sentence Correction |

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Re: Voyager 2

by hemanth28 » Sun Jun 21, 2009 7:56 am
gmat740 wrote:740.
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.


(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart; it is that of

[spoiler]OA-b(why D is wrong?)[/spoiler]
idiom usage :- not x but rather y
here x is "a nuclear reactor" which is noun.
so y should be a noun i.e "a kind of nuclear battery"

look at this sentence with D.

"not a nuclear reactor but that of a kind of nuclear battery". sounds awkward.
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by goelmohit2002 » Sun Jun 21, 2009 10:28 am
IMO In "D" first of all parallelism is not maintained....

Also there is no clear referent to that...

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by Domnu » Sun Jun 21, 2009 11:56 am
Energy sources are being compared to energy sources; 'that of' shouldn't be used here.
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by ranell » Sun Jun 21, 2009 12:11 pm
Looks like B is right. We don't need that of here, as we have a kind of. That of kind of looks awkward.

Moreover, there is idiom X but rather Y...

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