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Before scientists learned how to make a synthetic growth

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Before scientists learned how to make a synthetic growth [#permalink]

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Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists

I will proide OA later after 8-10 posts.
[Reveal] Spoiler: OA

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Re: scientists [#permalink]

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New post 05 Nov 2010, 02:48
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C.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
Sentence fragment. Referent of 'it' is synthetic growth hormone, when 'it' should be referring to growth hormone.

B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
Referent of 'it' is synthetic growth hormone, when 'it' should be referring to growth hormone.


C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed
Pronoun 'it' is sensible as it refers to the growth hormone.


D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
Referent of 'it' is synthetic growth hormone, when 'it' should be referring to growth hormone.

E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists
subject-verb agreement: it have (x)

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Re: scientists [#permalink]

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New post 05 Nov 2010, 03:29
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totally agree with Scheol79 for his threadbare explanation
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Re: scientists [#permalink]

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New post 05 Dec 2010, 20:28
C..as much as I am skeptical about use of "to be"
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Re: scientists [#permalink]

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New post 05 Dec 2010, 23:28
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Re: scientists [#permalink]

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New post 29 Oct 2011, 22:14
PTK wrote:
Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists

I will proide OA later after 8-10 posts.


A very nice question on pronouns. C wins. All other options have synthetic hormone as the referent for "it". Synthetic hormones cannot be removed from human cadavers.
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Re: Before scientists learned how to make a synthetic growth [#permalink]

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New post 14 Jan 2013, 15:46
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Could anyone please modify the original sentence, so that there is an additionnal "s" to "scientist" in the option C, such as follows:

Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientists learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists

Thanks in advance !
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Re: Before scientists learned how to make a synthetic growth [#permalink]

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New post 05 Apr 2013, 11:19
BammaBullet wrote:
Could anyone please modify the original sentence, so that there is an additionnal "s" to "scientist" in the option C, such as follows:

Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientists learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists

Thanks in advance !



Agreed. I dismissed C because it didn't include the plural form of the subject
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Re: Before scientists learned how to make a synthetic growth [#permalink]

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New post 12 May 2014, 06:32
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Re: Before scientists learned how to make a synthetic growth [#permalink]

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New post 27 May 2014, 06:19
PTK wrote:
Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small
amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists

I will proide OA later after 8-10 posts.


C

ABD out, because making a synthetic hormone is redundant given that synthetic already encapsulates the meaning of being made.
E is out because of SVA "it" needs "has".
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Re: Before scientists learned how to make a synthetic growth [#permalink]

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New post 07 Mar 2016, 09:26
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: Before scientists learned how to make a synthetic growth [#permalink]

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New post 07 Mar 2016, 09:58
A. scientists learned how to make a synthetic growth hormone, removing it painstakingly – a fragment
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly – 1. had learned was a later phenomenon, had to remove was the earlier phenomenon. Use of past perfect for the earlier is wrong. 2. ‘It’ refers to the synthetic hormone. One can’t remove a synthetic hormone from a body; it is only synthesized in a lab.

C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed – it promptly refers to the growth hormone (natural hormone and not synthetic.)
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly – it refers to synthetic growth hormone—wrong
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists— it have to be – is a typo? In any case, the modification is also wrong. Scientists should appear after the comma.

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Re: Before scientists learned how to make a synthetic growth   [#permalink] 07 Mar 2016, 09:58
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