Great topic - and I think that a huge advantage in these areas comes back to those who read strategically the first time through. I highly suggest a method that we at Veritas Prep
At the end of each paragraph, stop to check:
-What was the paragraph about (3 words or so about the Scope of the paragraph)
-Why was it written (2-3 words about the Purpose of the paragraph)
So, as an example, at the end of reading the passage your notes might be:
1) Introduce theory of evolution
2) Discuss criticisms of theory
3) Counter criticisms and discuss new research
There are several pieces of value in this strategy
-You'll be able to check for understanding at the end of each paragraph, and minimize the potential that you'll have to reread the whole thing
-For specific questions you should know which paragraph to go back to
-You're much more likely to avoid the trap answers for Primary Purpose questions, which typically trap you by stating something that two paragraphs do discuss, but that misses a third entirely (e.g., for this one, "discuss arguments in favor of and opposed to the theory of evolution" - but what about the new research?)
See if this helps - if you're focusing more on "why it was written" than specific derails, it's much easier to read without getting mired in details, and you can always know where to go for the specifics that you need.
Veritas Prep | GMAT Instructor
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