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# Although the phenomenon of withdrawal has always been the

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Although the phenomenon of withdrawal has always been the [#permalink]

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20 Mar 2010, 19:39
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Difficulty:

(N/A)

Question Stats:

100% (01:06) correct 0% (00:00) wrong based on 20 sessions

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100. Although the phenomenon of withdrawal has always been the crucial physiological Leng for distinguishing addictive from nonaddictive drugs, it has become increasingly evident that not all regular heroin users experience withdrawal symptoms.

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Joined: 26 May 2005
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Kudos [?]: 122 [0], given: 1

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20 Mar 2010, 19:46
seekmba wrote:
100. Although the phenomenon of withdrawal has always been the crucial physiological Leng for distinguishing addictive from nonaddictive drugs, it has become increasingly evident that not all regular heroin users experience withdrawal symptoms.

idiom is distinguish between x and y or distinguish x from y

A
SVP
Joined: 17 Feb 2010
Posts: 1511
Followers: 19

Kudos [?]: 630 [0], given: 6

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21 Mar 2010, 19:49
Thanks. OA is (A)
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