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Simple Video Explanations |
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Helping A GMAT Student
A student asked me this ManhattanGMAT question and I helped her answer it. Here’s the initial explanation I sent her.Aerugo, also known as verdigris, is the green “bloom” visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
(A) visible on many copper items, and is produced
(B) that is visible on many copper items, and which produces
(C) visible on many copper items, and produces
(D) that is visible on many copper items, and that produces
(E) which is visible on many copper items, and which is produced
The answer here is A. Let me explain.
The structure of the sentence is: Aerugo is [X], and is [Y].
where x = “the green bloom visible on many copper items”
y = “produced over the course of time”Don’t confuse this with the sentence structure that most people would see initially:
Aerugo is the green “bloom” [X], and [Y]
where x = visible on many copper items
y = is produedAt first glance, there may seem like something is wrong with A just because of the way they underline the sentence.
But if you step back and look at what the real structure of the sentence is, you’ll notice the keyword AND. Look to the left and look to the right.On the left you should see “is the green bloom visible on many copper items” and on the right you should see “is produced over the course of time.”
This is consistent.
All choices (B), (C), and (D) are incorrect because the end of the answer choices use the active verb “Produces” or “that produces” or “which produces”—you need to ask yourself: “Produce what?”
Well, if you sub it into the sentence, you’ll see: “that produces, like iron rust, over the course of time”
That doesn’t make sense! You don’t just “produce over the course of time.” You need to produce something. You need to produce [x].
Since it doesn’t make sense, all of them (B, C, and D) don’t make sense.Now, (A) does work because it does not follow this structure. Rather, it says the Aerugo “is produced, like iron rust, over the course of time.” This makes sense. Combine that with our analysis above with the X & Y consistency and you’ll see that answer (A) is correct.
Hope this helps!
Zeke
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Some More Feedback From Students
Well, it’s pretty consistent what students are saying—that the explanations are very clear and easy to understand. Below are the snippets from the email above.
“…without your guidance, I would not have been able to identify on my own.”“I am really enjoying your teaching style and feel like I am learning a lot!!!”
“I love the shortcuts and the fact that you don’t bog down people with big words.”
Related Resources:
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Answering the Question As Fast As Possible
Quote:Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away.A. wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling
B. wings, which is the same one that makes some butterflies shimmer via the phenomenon of iridescence, that also enables
C. wings is the same as the one that makes some butterflies shimmer via the phenomenon of iridescence, enabling
D. wings-the same construction that makes some butterflies shimmer via the phenomenon of iridescence-also enables
E. wings-of the same construction that makes some butterflies shimmer via the phenomenon of iridescence-also enableI surprisingly got to the answer D within 30 seconds. Let me show you how.
Step 1) Identify multiple commas—this is not a “laundry list” but rather several descriptive phrases. “Ultrathin” and “layered” are just words that describe “CONSTRUCTION.”
Step 2) The phrase “the same as the one making some butterflies shimmer” actually describes the “CONSTRUCTION of a butterfly’s wings“—NOT “wings” by itself.
Step 3) Cut the fluff:
“Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, are enabling the insect to control how much heat energy is absorbed by its wings and how much is reflected away. ”Construction are enabling? Doesn’t make sense! So you know (A) is wrong.
It should be:
“Scientists have recently discovered that the ultrathin, layered construction of a butterfly’s wings, the same as the one making some butterflies shimmer via the phenomenon of iridescence, enables the insect to control how much heat energy is absorbed by its wings and how much is reflected away. ”
Step 4) Browse through the answer choices–but don’t read them from the beginning—look at the last few words: that also enables, enabling, also enables, also enable…
Which ones make sense? The “construction” of these guys (where “construction” is singular) ENABLES.
You must use “ENABLES”—so either (B) or (D).Step 5) Note (B) has the extra word “that”—unnecessary. Also, it uses the word “which”—this implies the phrase describes “wings” when structurally the phrase really describes the “construction of the wings”–not the “wings.”
Therefore, (D) is the answer.
If you know how to strategically approach questions like these, you can most efficiently answer them in as little time as possible.
Study less. Score higher. Notice my explanation does not use any fancy grammar vocabulary.
_________________
———————
Zeke Lee
Co-Founder, The GMATPill Study Method
http://www.gmatpill.com
98%ile GMAT in 2 weeks
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GMAT Test Dates and Registration
When Do I Take the GMAT? When are the GMAT Test Dates?
It’s not like the SATs where everybody takes the exam at one time. You sign up to take the
exam INDIVIDUALLY, whenever you are free. Yes, that’s right. The only thing to consider
is when the test center (whichever test center you want to go, preferably close to where you
live) is open.
How Do I Register for the GMAT?
You must create an account with MBA.com, then proceed through the steps to choose a
testing center and available time. Once you do that, you make your $250 payment and you’ll
have officially registered for the GMAT exam. The specific link is:
http://www.mba.com/mba/thegmat/scheduleagmatappointmentBut, BEFORE YOU REGISTER, you should browse around the available test centers in your area and
see generally when they would be free. Your GMAT Test Date will be determined by when your closest
test center is available and reserving that date. You should schedule at least a month in advance to
make sure that time slot is open. Also, it’s good to know that most test centers are not open on wkends,
though you may occasionally find a Saturday here or there that could be open.Browse the test center list before you actually register here.
How much does the GMAT cost? GRE Cost?
$250 to register for the GMAT exam. $50 to reschedule before 7 days of exam.
Why should I take the GMAT now?
Well, your GMAT test score is valid for 5 Years. Five years is a long time. So even if you are
just out of college, it might make sense to take the exam now while you are still in study mode.
Additionally, it is very stressful studying for the exam while working full time so the best way to
avoid this is to take the test when you have a break.If you DO have to study for the GMAT while working full time, you should seriously consider a
fast and efficient way of studying such as the GMAT Pill Study Method. The video previews on
the site are good way to see whether this study strategy is for you or not.Related Resources:
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