GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Jan 2019, 02:24

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
  • FREE Quant Workshop by e-GMAT!

     January 20, 2019

     January 20, 2019

     07:00 AM PST

     07:00 AM PST

    Get personalized insights on how to achieve your Target Quant Score.

Industrialization and modern methods of insect control have improved

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Intern
Intern
avatar
B
Joined: 17 Aug 2017
Posts: 3
GMAT 1: 620 Q49 V26
GMAT 2: 620 Q47 V28
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 30 Sep 2018, 07:46
One doubt : In B Its only Introducing, don't you guys think that it is not a proper S-V Pair?
Intern
Intern
avatar
B
Joined: 05 Mar 2017
Posts: 5
CAT Tests
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 27 Dec 2018, 10:03
is the use of That CORRECT FOR Pollutants(Plural)
VP
VP
User avatar
P
Joined: 27 Mar 2010
Posts: 1064
Location: India
GPA: 3.31
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 28 Dec 2018, 08:02
1
kavach wrote:
is the use of That CORRECT FOR Pollutants(Plural)

Hi kavach, the usage of that is in fact most appropriate, since that (when used as a relative pronoun) can only modify non-persons (pollutants here).

p.s. Our book EducationAisle Sentence Correction Nirvana discusses the usage of that, its application and examples in significant detail. If you or someone is interested, PM me your email-id; I can mail the corresponding section.
_________________

Thanks,
Ashish
EducationAisle, Bangalore

Sentence Correction Nirvana available on Amazon.in and Flipkart

Now! Preview the entire Grammar Section of Sentence Correction Nirvana at pothi.com

Intern
Intern
avatar
B
Joined: 17 Aug 2018
Posts: 18
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 01 Jan 2019, 14:48
Hi GMATNinja @E-gmat

Please help me understand how A is incorrect grammatically.

I'm confused on the usage of "Having".
_________________

Spread some happiness..Press Kudos! :)

Study Buddy Forum Moderator
User avatar
V
Joined: 04 Sep 2016
Posts: 1298
Location: India
WE: Engineering (Other)
Premium Member CAT Tests
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 01 Jan 2019, 15:27
GMATNinja generis VeritasKarishma AjiteshArun GMATninja2

I find too many ambiguities in this official question.
Do not -while- mean same as - at the same time, other than contrast.
have improved and introducing are at all parallel in OA.

Also having with coma before or after subject always behaves as past perfect action.
Am I correct?

E.g. Having studied for 2 hours, Samiya went to play badminton.
Earlier action: Studying.
Later action: playing

This is the same as:
Samiya went to play badminton, having studied for 2 hours,

Can you help what I am missing?
_________________

It's the journey that brings us happiness not the destination.

GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2225
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 17 Jan 2019, 09:01
1
KaranB1 wrote:
Hi GMATNinja @E-gmat

Please help me understand how A is incorrect grammatically.

I'm confused on the usage of "Having".

The problem with (A) is the logic. Anytime we have CLAUSE + COMMA + VERB-ING, the verb-ing modifier will describe the previous clause and provide additional information about the action performed in that clause. For example, "Amy decided not to attend any more Phish concerts in 2018, having already gone to so many that she she'd begun to lose contact with reality." "Having already gone..." gives us additional information about the previous clause, shedding light on why Amy decided not to go to more Phish concerts. It's important to note here that because Amy is the subject of the previous clause, "having already gone" is describing her.

Now look at the relevant portion of (A), "they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.." In this case, "having gone unregulated" seems to be describing the subject of the previous clause, "they." "They" refers to "modern methods." But it's not the "modern methods" that have gone unregulated - it's the chemical pollutants. How could modern methods have gone unregulated for 50 years? So while (A) might not have a definitive grammatical problem, its meaning is illogical.

I hope that helps!
_________________

GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal

GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2225
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: Industrialization and modern methods of insect control have improved  [#permalink]

Show Tags

New post 17 Jan 2019, 09:48
adkikani wrote:

I find too many ambiguities in this official question.
Do not -while- mean same as - at the same time, other than contrast.
have improved and introducing are at all parallel in OA.

Sure, "while" can mean "at the same time", but it can also mean "although." I honestly don't love the use of "while at the same time" because it feels a little bit redundant to me, but it's not wrong. You could easily argue that "at the same time" helps clarify the meaning. At the very least, you wouldn't want to eliminate anything based on that issue alone.

adkikani wrote:
Also having with coma before or after subject always behaves as past perfect action.
Am I correct?

E.g. Having studied for 2 hours, Samiya went to play badminton.
Earlier action: Studying.
Later action: playing

This is the same as:
Samiya went to play badminton, having studied for 2 hours,

Can you help what I am missing?

Yup, you have the right idea. "Having + verb" will generally be the first of two actions. I didn't emphasize that in my post above, because it's also try that "having + verb" needs to logically modify the preceding (or subsequent) clause. And you're correct that your two sentences about Samiya are basically are the same meaning-wise, though we might argue that it's a little bit cleaner to start with the first action ("having studied for two hours").

You can also find a crusty old discussion of "having" in this transcript.

I hope this helps!
_________________

GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal

GMAT Club Bot
Re: Industrialization and modern methods of insect control have improved &nbs [#permalink] 17 Jan 2019, 09:48

Go to page   Previous    1   2   [ 27 posts ] 

Display posts from previous: Sort by

Industrialization and modern methods of insect control have improved

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.