While some of the blood samples were contaminated today, : GMAT Sentence Correction (SC)
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# While some of the blood samples were contaminated today,

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While some of the blood samples were contaminated today, [#permalink]

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11 Feb 2007, 04:47
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While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists already finished their research.

(A) the same

(B) While some of the blood samples had been contaminated today, rendering them useless for further experiments, the scientists

(C) Some of the blood samples had been contaminated today, rendering them useless for further experiments; fortunately, the scientists had

(D) While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists had

(E) Today some of the blood samples were contaminated, rendering them useless for further experiments, but the scientists

I would eliminate A, B and D because they begin with while.
Then, between C and E, would choose E, because of had been in C

Any comment?
If you have any questions
New!
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Re: SC - blood samples [#permalink]

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11 Feb 2007, 05:09
jvujuc wrote:
While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists already finished their research.

(A) the same
(B) While some of the blood samples had been contaminated today, rendering them useless for further experiments, the scientists
(C) Some of the blood samples had been contaminated today, rendering them useless for further experiments; fortunately, the scientists had
(D) While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists had
(E) Today some of the blood samples were contaminated, rendering them useless for further experiments, but the scientists

I would eliminate A, B and D because they begin with while.
Then, between C and E, would choose E, because of had been in C

Any comment?

What is wrong with the use of while in the beginning of a sentence? I was contemplating between C and D. I decided to go with D because it sequences events correctly, with the use of past perfect. The scientists had already completed their research before the blood was contaminated.

C I thought required a full stop rather than a semi colon, the two parts seem like separate sentences, although I was very tempted to choose C.
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11 Feb 2007, 05:40
D

Were ..had ...showing sequence of activities correctly
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11 Feb 2007, 07:55
Well, while is suborinating conjuction. A clause that begins with a subordinating conjuction cannot stand alone, which is here not a case.

At the second look, this can be a verb tense problem

(A) samples were contaminated - scientists finished
(B) samples had been contaminated - scientists finished
(D) samples were contaminated - scientists had finished

Now I would choose D

Scientists had already finished their research, and then they saw that samples were contaminated

faifai0714 wrote:
There's logic problem in D.

What is the logic problem in D?
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14 Feb 2007, 14:54
jvujuc wrote:
arj_singh1976 wrote:
E..

Why?

I have no clear explaination for E..but I picked up E for using 'but'. To me this shows a proper contranst in the sentence.

What is the OA for this. Please post OE if you have. thanks
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16 Feb 2007, 08:03
ill go with D ,you need past perfect tense, the scientists HAD completed their work, which occured before the cotamination happened
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16 Feb 2007, 08:10
Answer simply was D for me because...

I didnt care about C because I doesn't matter to me if it is "fortunate" or "unfortunate". I mean, I do not like an additional word to the existing sentence even though it may sound correct.

A,B and are ruled out as they didn't have HAD.
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16 Feb 2007, 19:35
mramkumar wrote:
Answer simply was D for me because...

I didnt care about C because I doesn't matter to me if it is "fortunate" or "unfortunate". I mean, I do not like an additional word to the existing sentence even though it may sound correct.

A,B and are ruled out as they didn't have HAD.

usage of "while" in D does not look accurate. Does it?
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Re: SC - blood samples [#permalink]

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21 Feb 2007, 00:35
hsampath wrote:
jvujuc wrote:
While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists already finished their research.

(A) the same
(B) While some of the blood samples had been contaminated today, rendering them useless for further experiments, the scientists
(C) Some of the blood samples had been contaminated today, rendering them useless for further experiments; fortunately, the scientists had
(D) While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists had
(E) Today some of the blood samples were contaminated, rendering them useless for further experiments, but the scientists

I would eliminate A, B and D because they begin with while.
Then, between C and E, would choose E, because of had been in C

Any comment?

What is wrong with the use of while in the beginning of a sentence? I was contemplating between C and D. I decided to go with D because it sequences events correctly, with the use of past perfect. The scientists had already completed their research before the blood was contaminated.

C I thought required a full stop rather than a semi colon, the two parts seem like separate sentences, although I was very tempted to choose C.

I think semicolon is used when the two parts of the sentence can go independently.... however i would not pick C.

I do not see the connection of the two parts of the sentence in D.
While some of the blood samples were contaminated today.....the scientists had already finished their research This word While does not connect to the researchers had already finished their research i am not sure why this contamination should bother scientists at all....

In E however, it is clear that those blood samples, which were contaminated are somehow related with the scientists research. The word but connects the two parts of the sentence i think

I choose E.
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Re: SC - blood samples [#permalink]

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21 Feb 2007, 03:15
SimaQ wrote:
hsampath wrote:
jvujuc wrote:
While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists already finished their research.

(A) the same
(B) While some of the blood samples had been contaminated today, rendering them useless for further experiments, the scientists
(C) Some of the blood samples had been contaminated today, rendering them useless for further experiments; fortunately, the scientists had
(D) While some of the blood samples were contaminated today, rendering them useless for further experiments, the scientists had
(E) Today some of the blood samples were contaminated, rendering them useless for further experiments, but the scientists

I would eliminate A, B and D because they begin with while.
Then, between C and E, would choose E, because of had been in C

Any comment?

What is wrong with the use of while in the beginning of a sentence? I was contemplating between C and D. I decided to go with D because it sequences events correctly, with the use of past perfect. The scientists had already completed their research before the blood was contaminated.

C I thought required a full stop rather than a semi colon, the two parts seem like separate sentences, although I was very tempted to choose C.

I think semicolon is used when the two parts of the sentence can go independently.... however i would not pick C.

I do not see the connection of the two parts of the sentence in D.
While some of the blood samples were contaminated today.....the scientists had already finished their research This word While does not connect to the researchers had already finished their research i am not sure why this contamination should bother scientists at all....

In E however, it is clear that those blood samples, which were contaminated are somehow related with the scientists research. The word but connects the two parts of the sentence i think

I choose E.

I think E is missing 'had'. In D, 'while' correctly sets up a contrast. Â¨While while is not my favourite word to do so, D is better than all other choices
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21 Feb 2007, 06:18
A & B are out for obvious reasons. Letâ€™s simplify C, D & E.

(C) Some of the blood samples had been contaminated today; fortunately, the scientists had already finished their research.

(D) While some of the blood samples were contaminated today the scientists had already finished their research.

(E) Today some of the blood samples were contaminated but the scientists already finished their research.

D does not read right, so its out as we need something in between e.g. but to connect the two part.

E has both parts in past-simple (the 1st of course in passive) so we donâ€™t know which action had taken when.

We are left with C.
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21 Feb 2007, 10:42
asaf wrote:
A & B are out for obvious reasons. Letâ€™s simplify C, D & E.

(C) Some of the blood samples had been contaminated today; fortunately, the scientists had already finished their research.

(D) While some of the blood samples were contaminated today the scientists had already finished their research.

(E) Today some of the blood samples were contaminated but the scientists already finished their research.

D does not read right, so its out as we need something in between e.g. but to connect the two part.

E has both parts in past-simple (the 1st of course in passive) so we donâ€™t know which action had taken when.

We are left with C.

hey asaf,

i dont think v need a "but" when using "while" (pls correct me if i m wrong..... i wanna learn)
moreover, i think, that C gives useless extra information (fortunately....). But here we dont need the xtra info........
ill go with D
thats wot i think........... btw wots the OA??
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21 Feb 2007, 12:13
hey asaf,

i dont think v need a "but" when using "while" (pls correct me if i m wrong..... i wanna learn)
moreover, i think, that C gives useless extra information (fortunately....). But here we dont need the xtra info........
ill go with D
thats wot i think........... btw wots the OA??[/quote]

I thought the two parts in D did not go well together.
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24 Feb 2007, 04:42
faifai0714 wrote:
There's logic problem in D.

What is the logic problem in D?[/quote]

24 Feb 2007, 04:42
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