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# Studies of the human sleep-wake cycle have practical

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Manager
Joined: 01 Nov 2007
Posts: 98
Studies of the human sleep-wake cycle have practical  [#permalink]

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14 Feb 2008, 21:19
1
2
00:00

Difficulty:

(N/A)

Question Stats:

82% (00:36) correct 18% (00:57) wrong based on 51 sessions

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Studies of the human “sleep-wake cycle” have practical relevance for matters ranging from duty assignments in nuclear submarines and air-traffic control towers to the staff of shifts in 24-hour factories.
(A) to the staff of
(B) to those who staff
(C) to the staffing of
(D) and staffing
(E) and the staff of
SVP
Joined: 29 Aug 2007
Posts: 2410

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14 Feb 2008, 22:55
az780 wrote:
Studies of the human “sleep-wake cycle” have practical relevance for matters ranging from duty assignments in nuclear submarines and air-traffic control towers to the staff of shifts in 24-hour factories.

(A) to the staff of
(B) to those who staff
(C) to the staffing of
(D) and staffing
(E) and the staff of

C for "from ....to" and parallel structure.
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Director
Joined: 30 Jun 2007
Posts: 731

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14 Feb 2008, 23:51
Sentence is checking for usage: ranging from duty … to the
(A) to the staff of ( to the staff of shifts in – awkward construction – eliminate it)
(B) to those who staff (those has no clear referent – eliminate it)
(C) to the staffing of (Hold it)
(D) and staffing (Unidiomatic – eliminate it)
(E) and the staff of (Unidiomatic – eliminate it)
Non-Human User
Joined: 01 Oct 2013
Posts: 2967
Re: Studies of the human sleep-wake cycle have practical  [#permalink]

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15 Jul 2018, 06:48
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Studies of the human sleep-wake cycle have practical &nbs [#permalink] 15 Jul 2018, 06:48
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# Studies of the human sleep-wake cycle have practical

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