Find all School-related info fast with the new School-Specific MBA Forum

It is currently 17 Sep 2014, 22:21

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The Official Guide's Reading Comprehension Passage #20

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
User avatar
Joined: 07 Nov 2009
Posts: 44
Location: New York, NY
Schools: Columbia, NYU, Wharton, UCLA, Berkeley
WE 1: 2 Yrs mgmt consulting
WE 2: 2 yrs m&a
Followers: 0

Kudos [?]: 8 [0], given: 1

Reviews Badge
The Official Guide's Reading Comprehension Passage #20 [#permalink] New post 12 Jan 2011, 19:48
Hi, I need some help answering these questions from the Official Guide. I don't understand how they got the answer...confused..

Although genetic mutations in bacteria and viruses
can lead to epidemics, some epidemics are caused by
bacteria and viruses that have undergone no significant
genetic change. In analyzing the latter, scientists have
(5) discovered the importance of social and ecological factors
to epidemics. Poliomyelitis, for example, emerged
as an epidemic in the United States in the twentieth
century; by then, modern sanitation was able to delay
exposure to polio until adolescence or adulthood, at
(10) which time polio infection produced paralysis. Previously,
infection had occurred during infancy, when it
typically provided lifelong immunity without paralysis.
Thus, the hygiene that helped prevent typhoid epidemics
indirectly fostered a paralytic polio epidemic. Another
(15) example is Lyme disease, which is caused by bacteria
that are transmitted by deer ticks. It occurred only sporadically
during the late nineteenth century but has
recently become prevalent in parts of the United States,
largely due to an increase in the deer population that
(20) occurred simultaneously with the growth of the suburbs
and increased outdoor recreational activities in the
deer’s habitat. Similarly, an outbreak of dengue hemorrhagic
fever became an epidemic in Asia in the 1950’s
because of ecological changes that caused Aedes aegypti,
(25) the mosquito that transmits the dengue virus, to proliferate
The stage is now set in the United States for a
dengue epidemic because of the inadvertent introduction
and wide dissemination of another mosquito, Aedes
albopictus.

QUESTION:
1. The passage suggests that a lack of modern sanitation would make which of the following most likely to occur?

A: An outbreak of Lyme disease
B: An outbreak of dengue hemorrhagic fever
C: An epidemic of typhoid
D: An epidemic of paralytic polio among infants
E: An epidemic of paralytic polio among adolescents and adults


2. According to the passage, the outbreak of dengue hemorrhagic fever in the 1950’s occurred for which of the following reasons?

A: The mosquito Aedes aegypti was newly introduced into Asia.
B: The mosquito Aedes aegypti became more numerous.
C: The mosquito Aedes albopictus became infected with the dengue virus.
D: Individuals who would normally acquire immunity to the dengue virus as infants were not infected until later in life.
E: More people began to visit and inhabit areas in which mosquitos live and breed.


3. It can be inferred from the passage that Lyme disease has become prevalent in parts of the United States because of which of the following?

A: The inadvertent introduction of Lyme disease bacteria to the United States
B: The inability of modern sanitation methods to eradicate Lyme disease bacteria
C: A genetic mutation in Lyme disease bacteria that makes them more virulent
D: The spread of Lyme disease bacteria from infected humans to noninfected humans
E: An increase in the number of humans who encounter deer ticks
Expert Post
GMAT Pill Instructor
User avatar
Joined: 14 Apr 2009
Posts: 1559
Location: New York, NY
Followers: 288

Kudos [?]: 659 [0], given: 6

Re: The Official Guide's Reading Comprehension Passage #20 [#permalink] New post 13 Jan 2011, 10:03
Expert's post
The answers are
1)
[Reveal] Spoiler:
C

2)
[Reveal] Spoiler:
B

3)
[Reveal] Spoiler:
E


I created a video to help you reason and think through this passage. Take a look!

http://www.gmatpill.com/practicequestio ... tions.html

Image
_________________


... and more


Image What's Inside GMAT Pill?

Zeke Lee, GMAT Pill Study Method (Study Less. Score More.)


GMAT Pill Reviews | GMAT PILL Free Practice Test

Intern
Intern
avatar
Joined: 29 Jan 2011
Posts: 1
Followers: 0

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

Виагра [#permalink] New post 01 Feb 2011, 03:41
+1 mne toge intersna eta tema
Manager
Manager
User avatar
Status: Still Struggling
Joined: 02 Nov 2010
Posts: 139
Location: India
GMAT Date: 10-15-2011
GPA: 3.71
WE: Information Technology (Computer Software)
Followers: 5

Kudos [?]: 14 [0], given: 8

Re: The Official Guide's Reading Comprehension Passage #20 [#permalink] New post 22 Feb 2011, 09:25
+1 for CBE..
_________________

Appreciation in KUDOS please!
Knewton Free Test 10/03 - 710 (49/37)
Princeton Free Test 10/08 - 610 (44/31)
Kaplan Test 1- 10/10 - 630
Veritas Prep- 10/11 - 630 (42/37)
MGMAT 1 - 10/12 - 680 (45/34)

Re: The Official Guide's Reading Comprehension Passage #20   [#permalink] 22 Feb 2011, 09:25
    Similar topics Author Replies Last post
Similar
Topics:
12 Experts publish their posts in the topic New Reading Comprehension Forum Feature - Split Passage and Marcab 10 21 Jan 2013, 11:16
On the actual GMAT do the reading comprehension passages allsaints921 1 14 May 2012, 17:20
1 Experts publish their posts in the topic Which guide for reading comprehension? nikhilsrl 1 26 Jan 2011, 02:31
150 Experts publish their posts in the topic GMAT Club's Reading Comprehension Strategy Guide bb 85 27 Aug 2009, 02:09
198 Experts publish their posts in the topic HOW TO DESTROY READING COMPREHENSION PASSAGES BY RHYME rhyme 101 05 Jun 2006, 18:14
Display posts from previous: Sort by

The Official Guide's Reading Comprehension Passage #20

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.