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20 Sep 2011, 08:01
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
78% (00:53) correct
22%
(01:01)
wrong
based on 90
sessions
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The Stirling engine is not a photovoltaic system, in which sunlight excites electrons in a semiconductor to generate electricity; rather a parabolic dish that concentrates solar power, generating heat that is converted to grid-quality electricity.
(A) electricity; rather
(B) electricity, but rather
(C) electricity, but rather that of
(D) electricity, but that of
(E) electricity; it is that of
I have a question on the correct answer
(A) electricity; rather
(B) electricity, but rather
(C) electricity, but rather that of
(D) electricity, but that of
(E) electricity; it is that of
I have a question on the correct answer
regarding the word BUT, (which is a Coordinating Conjunction (Fanboys word according to Knewton))
I thought that But, And, Yet etc. would connect a Independent clause with a Comma + Coordinating Conjunction
for example. I need to relax, but I have so many things to do.
My question is why is BUT OK in answer B...In B there is no subject or main verb in place after BUT so it can´t be an independent clause ?
I thought that But, And, Yet etc. would connect a Independent clause with a Comma + Coordinating Conjunction
for example. I need to relax, but I have so many things to do.
My question is why is BUT OK in answer B...In B there is no subject or main verb in place after BUT so it can´t be an independent clause ?
20 Sep 2011, 09:35
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A coordinating conjunction can join two independent clauses, two phrases, or just two items. The only stipulation is that both items are equal
Ex:
I wanted to go New York but went to Washington – two clauses. The subject I in the second clause is understood.
I came here to sip blood warming brandy but not a bland mug of beer. – Two phrases
The sales clerk has no great wisdom but rather street-smartness --- two items
Ex:
I wanted to go New York but went to Washington – two clauses. The subject I in the second clause is understood.
I came here to sip blood warming brandy but not a bland mug of beer. – Two phrases
The sales clerk has no great wisdom but rather street-smartness --- two items
20 Sep 2011, 10:27
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hafgola
I guess the trap is that we see ", but" and expect an independent clause to follow. However, if you take a close look, ", but" does not precede a complete independent clause. In fact, the "," is used as an end to the modifier. Thus, this is a sentence where only one independent clause is separated by a modifying clause, which causes confusing.
The Stirling engine is not a photovoltaic system[highlight], in which sunlight excites electrons in a semiconductor to generate electricity,[/highlight] but rather a parabolic dish that concentrates solar power, generating heat that is converted to grid-quality electricity.
If we get rid of the modifiers:
The Stirling engine is not a photovoltaic system but rather a parabolic dish that concentrates solar power.
Now, we just have one independent clause. This is how we should consider our problem statement.
