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# Researchers have announced that the magnetic fields emitted

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Manager
Joined: 02 Aug 2006
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Researchers have announced that the magnetic fields emitted [#permalink]

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18 Oct 2006, 07:32
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Researchers have announced that the magnetic fields emitted by one manufacturerâ€™s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

A.of which type there are 200,000 worldwide, can interfere with pacemakers and that

B.of which, worldwide, there are 200,000 of that type, and which can interfere with pacemakers, and

C.of which type there are 200,000 worldwide, they can interfere with pacemakers and

D.200,000 of which type exist worldwide, interfering with pacemakers, and

E.200,000 of that type existing worldwide and can interfere with pacemakers, and
If you have any questions
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18 Oct 2006, 07:37
Researchers have announced that the magnetic fields emitted by one manufacturerâ€™s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
Director
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18 Oct 2006, 09:19
Researchers have announced that the magnetic fields emitted by one manufacturerâ€™s security surveillance system, 200,000 of which type exist worldwide, interfering with pacemakers, and this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

D for me.
Senior Manager
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18 Oct 2006, 09:50
This is tough one with all of the choices sounding awkward. I think A sounds best.
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Director
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18 Oct 2006, 11:14
It is A...

All other choices are either incomplete or change the meaning of the sentence....
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18 Oct 2006, 11:59
(D) cannot be the answer because it changes the meaning from "unknown" to "Known". "Can interfere" to "(does) interfere"
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18 Oct 2006, 12:44
Thanks Matt, for your clear as crystal explanation
Mainly pinpointing that and that...

A should be correct...
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18 Oct 2006, 18:44
A here! no error found! and correct usage of "that".
Director
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18 Oct 2006, 19:16
A is the only one without obvious mistakes.
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18 Oct 2006, 19:45
GMATT73 wrote:
Researchers have announced that the magnetic fields emitted by one manufacturerâ€™s security surveillance system, of which type there are 200,000 worldwide, can interfere with pacemakers and that this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.

Beautiful analysis

My choice is A too.
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the way is difficult, but perfect trust makes it easy.

18 Oct 2006, 19:45
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