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QOTD: A new test for AIDS has proved

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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 14 Jun 2017, 05:32
A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

The sentence format is in present perfect so the action has already performed and the effect is tested
Option D and E can be elminated as it describes future prospects of the experiment

The format is synonymous to this

I look forward to meeting you

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
The meaning ambiguity, as this sentence implies performing more than one action
(B) in eliminating blood from the nation's blood supply that is contaminated with the virus;
Meaning ambiguity as it implies eliminating all the blood and the restrictive that wrongly modifies supply
(C) in eliminating from the nation's blood supply blood that is contaminated with the virus Correct
(D) to eliminate blood that is contaminated with the virus from the nation's blood supply
(E) to eliminate blood from the nation's blood supply that is contaminated with the virus
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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 16 Jun 2017, 18:42
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Lucy Phuong wrote:
sriamlan wrote:
I think for OA C to be correct there must be a "," between blood supply and blood. It should look as mentioned below

in eliminating from the nation's blood supply, blood that is contaminated with the virus


Hi, IMHO I think if a comma is inserted the way you mention, then the meaning will be changed.

A new test for AIDS has proved helpful in eliminating from the nation's blood supply, blood that is contaminated with the virus.

Separated by a comma, the word "blood" seems to modify "nation's blood supply"; it means the WHOLE nation's blood supply is contaminated with the virus. This is not intended meaning of the sentence.

Option (C): ....eliminate from B A (it could be rewritten as eliminate A from B)
A: blood that is contaminated with the virus
B: the nation's blood supply
When you put a comma in the sentence: .... eliminate from B, A....
Then it looks like A is no longer what is eliminated, but B (A=B).
Also, we will have to put a big question mark before the comma - eliminate what?

Sir GMATNinja please guide us on this concern and correct me if I'm wrong. Thank you.


Sorry, Lucy -- I could have sworn that I responded to this, but I think I just gave you kudos and then forgot to hit the "submit" button on my response. Bad Ninja!

I think you're spot-on here. It's really subtle, but it sounds like that extra comma would make it sounds like the whole supply is contaminated. Tricky stuff!
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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 17 Jun 2017, 07:44
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GMATNinja wrote:
Lucy Phuong wrote:
sriamlan wrote:
I think for OA C to be correct there must be a "," between blood supply and blood. It should look as mentioned below

in eliminating from the nation's blood supply, blood that is contaminated with the virus


Hi, IMHO I think if a comma is inserted the way you mention, then the meaning will be changed.

A new test for AIDS has proved helpful in eliminating from the nation's blood supply, blood that is contaminated with the virus.

Separated by a comma, the word "blood" seems to modify "nation's blood supply"; it means the WHOLE nation's blood supply is contaminated with the virus. This is not intended meaning of the sentence.

Option (C): ....eliminate from B A (it could be rewritten as eliminate A from B)
A: blood that is contaminated with the virus
B: the nation's blood supply
When you put a comma in the sentence: .... eliminate from B, A....
Then it looks like A is no longer what is eliminated, but B (A=B).
Also, we will have to put a big question mark before the comma - eliminate what?

Sir GMATNinja please guide us on this concern and correct me if I'm wrong. Thank you.


Sorry, Lucy -- I could have sworn that I responded to this, but I think I just gave you kudos and then forgot to hit the "submit" button on my response. Bad Ninja!

I think you're spot-on here. It's really subtle, but it sounds like that extra comma would make it sounds like the whole supply is contaminated. Tricky stuff!


Your message motivated me a lot :) Thanks thanks!
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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 20 Jul 2017, 01:36
GMATNinja

Could please help me with D ?? The THAT after blood refers to blood right ? So where did the virus come from ??

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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 28 Jul 2017, 13:11
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anuj11 wrote:
GMATNinja

Could please help me with D ?? The THAT after blood refers to blood right ? So where did the virus come from ??


It might help to compare (C) and (D) right next to each other:

    (C) in eliminating from the nation's blood supply blood that is contaminated with the virus
    (D) to eliminate blood that is contaminated with the virus from the nation's blood supply

In (C), it's 100% clear that the blood is contaminated with the virus -- and that we're eliminating that contaminated blood from the nation's blood supply. That's the entire point of the sentence: the blood that's contaminated with the virus must be eliminated from the nation's blood supply.

In (D), the sentence is flipped around in ways that don't quite make sense, and aren't as clear. First, it's literally saying that the virus is from the nation's blood supply, and that's really not the point -- presumably, the virus itself came from somewhere else before it landed in the blood supply. Second, (D) literally says that we're eliminating contaminated blood in general -- not necessarily contaminated blood that is in the nation's blood supply.

It's a subtle distinction, but enough to make (C) a better answer than (D).

I hope this helps!
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November webinar schedule

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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 31 Aug 2017, 08:00
A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
virus is not from nation's blood supply : Incorrect

(B) in eliminating blood from the nation's blood supply that is contaminated with the virus
blood supply is not contaminated : Incorrect

(C) in eliminating from the nation's blood supply blood that is contaminated with the virus
correct
(D) to eliminate blood that is contaminated with the virus from the nation's blood supply
virus is not from nation's blood supply ; Incorrect
(E) to eliminate blood from the nation's blood supply that is contaminated with the virus
blood suppply is not contaminated ; Incorrect

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Re: QOTD: A new test for AIDS has proved [#permalink]

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New post 04 Oct 2017, 08:26
A is wrong b/c "contaminated with virus" is an essential part of the sentence.
It is still hard for me to see whether there is a purpose or not.

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Re: QOTD: A new test for AIDS has proved   [#permalink] 04 Oct 2017, 08:26

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