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According to surveys by the National Institute on Drug [#permalink]
29 Sep 2004, 19:05
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According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey
Example The car stopped, making me late.
First clause indicates that there is some action which results in my late arrival. Thus there is cause and effect relation.
Choice a is wrong based on above explanation. There is no cause and effect relation which will double the numbers.
Choice B is awkward at best and unidiomatic at worst as it shows that "to double" is indicating towards the subject which is 20% of young adults.
Choice C Example: Do we say that "twice the number of crimes reported?"
or "twice crimes reported?". Always try the phrases in small sentences to see whether it makes sense or not?
Choice D It is unidiomatic to use twice and as many as together as both are used to indicate the comparision because as many as indicates equal to whereas twice indicates doubling the number.
Choice E is without any flaws.
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Check out this awesome article about Anderson on Poets Quants, http://poetsandquants.com/2015/01/02/uclas-anderson-school-morphs-into-a-friendly-tech-hub/ . Anderson is a great place! Sorry for the lack of updates recently. I...