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The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
 18 Jun 2007, 08:39
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Question Stats:
85% (01:44) correct
14% (00:58) wrong based on 11 sessions
The energy source on Voyager2 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
The idiom is not X but rather Y. Therefore, ADE are wrong.
Why is B correct instead of C? Is it because it is more concise?
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
24 May 2013, 01:13
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Actually it is not just but, but not X but Y. X is a phrase: a nuclear reactor (,in which atoms are actively broken apart) Y is also a phrase: rather a kind of nuclear battery (that uses natural radioactive decay to produce power) I have put the modifiers (relative clauses) in brackets above to make it clear that the actual phrases are a nuclear reactor and a kind of nuclear battery. In fact, I can't think of any scenario where Not X but Y would have complete clauses in X and Y. Does something come to your mind? Would be interesting to see.
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Senior Manager
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think of it like this-
B) the energy source is not X, but rather a kind of Y
C) the energy source is not X, but rather that of a kind of Y
C is unnecessary and changes the meaning of the sentence, hence answer is B
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Director
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I agree with r019h. "that of" is too wordy and unnecessary.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
10 Mar 2012, 19:30
I have chosen B for this question:
A. This answer choice does 2 things incorrectly - it splits the comparison into 2 independence clauses and the second clause is a fragment. There is no reason to include a semicolon because it is splitting up the comparison into 2 sentences.
B. This answer is correct because it follows the not X, but rather Y comparison. Also, the elements are parallel.
C. This answer is incorrect. Although it does follow not X, but rather Y, "that of" is a relative pronoun that refers to nothing.
D. "That" does not refer to anything.
E. Again, the semicolon is unnecessary because we want a sentence that clearly describes the comparison in one thought.
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Manager
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
11 Mar 2012, 00:38
Undoubtedly B. Its very clear as the other sounds very awkward.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
23 Mar 2012, 12:10
Others sound wrong. Answer should be B
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Verbal GMAT Forum Moderator
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
29 Mar 2012, 23:43
follows idiomatic expression not x, but rather y a. use of semicolon wrong + not idiomatic b. Correct c. that of - reference error, there is no antecedent to this. d. not idiomatic - rather missing e. that of - reference error, there is no antecedent to this. + not idiomatic - rather missing
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Manager
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
30 Mar 2012, 00:22
IMO B. A/D/E - wrong idiom C - 'that of' - that has no referent
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
30 Mar 2012, 01:55
C is awkward construction. B is the clear winner.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
24 May 2013, 00:15
the question uses a "not x ...but rather y" type of construction. I am confused that in such a case is "but" acting as a coordinating conjunction i.e. it must be followed by a complete clause . If so please tell me which is the main verb in the clause followed by but i.e." a kind of nuclear battery that uses natural radioactive decay to produce power"?
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
24 May 2013, 01:48
EducationAisle wrote: Actually it is not just but, but not X but Y.
X is a phrase: a nuclear reactor (,in which atoms are actively broken apart)
Y is also a phrase: rather a kind of nuclear battery (that uses natural radioactive decay to produce power)
I have put the modifiers (relative clauses) in brackets above to make it clear that the actual phrases are a nuclear reactor and a kind of nuclear battery.
In fact, I can't think of any scenario where Not X but Y would have complete clauses in X and Y. Does something come to your mind? Would be interesting to see. Thankyou so much Ashish ,that was very useful. So , I can safely conclude that every usage of "but" doesn't necessitate it to be used as a conjunction.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]
24 May 2013, 07:47
There is one more thing. It looks from your earlier post that you did realize that this question uses not x ...but rather y type of construction. B, C and D are the three options that use this construct and none of these options uses a clause after but. Hence the entire debate about whether a clause must be used after but is a moot point for this question; I understand though that your question was perhaps for a larger understanding and not necessarily limited to this question alone. However, in general, test-takers should in fact develop an eye for seeing what really matters for a question. The reason I want to highlight this is that students get worked-up on issues that don't matter for a question. This happens very often with questions where students think that a pronoun has ambiguous reference. We suggest students that if the same pronoun ambiguity exists in all 5 options, then move on, because in that case, clearly pronoun ambiguity is not being tested there; the same way as clause after but is not getting tested here: ).
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Re: The energy source on Voyager2 is not a nuclear reactor, in
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24 May 2013, 07:47
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