Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 1511:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease.
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!- Dec 17
09:00 AM PST
-10:00 AM PST
Join Manhattan Prep instructor Whitney Garner for a fun—and thorough—review of logic-based (non-math) problems, with a particular emphasis on Data Sufficiency and Two-Parts. - Dec 18
10:00 AM PST
-11:00 AM PST
Here is the essential guide to securing scholarships as an MBA student! In this video, we explore the various types of scholarships available, including need-based and merit-based options.
27 Dec 2020, 23:17
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
68% (01:07) correct
32%
(01:13)
wrong
based on 325
sessions
History
Date
Time
Result
Not Attempted Yet
Just as the outer surface of a spacecraft expands and shrinks as it is exposed to and shielded from the sun, so the outer crust of the Earth expands and contracts each solar day, although changes in the Earth's crust are more difficult to detect.
A. so the outer crust of the Earth expands and contracts each solar day
B. the outer crust of the Earth has been expanding and contracting each solar day
C. there has been, each solar day, an expansion and contraction in the outer crust of the Earth
D. so the Earth's outer crust expands and, each solar day, contracts
E. similarly, the outer crust of the Earth expands and contracts each solar day
A. so the outer crust of the Earth expands and contracts each solar day
B. the outer crust of the Earth has been expanding and contracting each solar day
C. there has been, each solar day, an expansion and contraction in the outer crust of the Earth
D. so the Earth's outer crust expands and, each solar day, contracts
E. similarly, the outer crust of the Earth expands and contracts each solar day
12 Mar 2021, 05:09
Kudos
Bookmarks
UdayPratapSingh99
Official Explanation
The sentence is correct as written. The underlined portion of the sentence contains the second half of a comparison, so make sure the items being compared are similar. The first item being compared is the outer surface of a spacecraft expands and shrinks. The underlined portion contains the second half of the comparison, which is the outer crust of the Earth expands and contracts. This is a correct comparison as these two items are similar, so keep choice A. Because there is no error in the original sentence, there are no obvious repeaters. Evaluate the remaining answer choice individually, looking for reasons to eliminate each.
Choice B creates an incorrect comparison as the verb tenses being compared are expands and shrinks…expanding and contracting. Eliminate choice B.
Choice C creates an incorrect comparison as the two items being compared are the verbs expands and shrinks and the nouns expansion and contraction. Eliminate choice C.
Choice D changes the meaning of the sentence by placing the modifying phrase each solar day before the verb contracts, so that the modifying phrase modifies only the verb contracts indicating that the Earth’s outer crust expands but only contracts…each solar day. Eliminate choice D.
Choice E uses the incorrect idiom construction just as…similarly as opposed to the correct idiom structure found in the original sentence just as…so. Eliminate choice E.
The correct answer is choice A.
The sentence is correct as written. The underlined portion of the sentence contains the second half of a comparison, so make sure the items being compared are similar. The first item being compared is the outer surface of a spacecraft expands and shrinks. The underlined portion contains the second half of the comparison, which is the outer crust of the Earth expands and contracts. This is a correct comparison as these two items are similar, so keep choice A. Because there is no error in the original sentence, there are no obvious repeaters. Evaluate the remaining answer choice individually, looking for reasons to eliminate each.
Choice B creates an incorrect comparison as the verb tenses being compared are expands and shrinks…expanding and contracting. Eliminate choice B.
Choice C creates an incorrect comparison as the two items being compared are the verbs expands and shrinks and the nouns expansion and contraction. Eliminate choice C.
Choice D changes the meaning of the sentence by placing the modifying phrase each solar day before the verb contracts, so that the modifying phrase modifies only the verb contracts indicating that the Earth’s outer crust expands but only contracts…each solar day. Eliminate choice D.
Choice E uses the incorrect idiom construction just as…similarly as opposed to the correct idiom structure found in the original sentence just as…so. Eliminate choice E.
The correct answer is choice A.
General Discussion
29 Dec 2020, 23:07
Kudos
Bookmarks
Just as the outer surface of a spacecraft expands and shrinks as it is exposed to and shielded from the sun, so the outer crust of the Earth expands and contracts each solar day, although changes in the Earth's crust are more difficult to detect.
A. so the outer crust of the Earth expands and contracts each solar day Correct
B. the outer crust of the Earth has been expanding and contracting each solar day Incorrect
C. there has been, each solar day, an expansion and contraction in the outer crust of the Earth Incorrect
D. so the Earth's outer crust expands and, each solar day, contracts Incorrect
E. similarly, the outer crust of the Earth expands and contracts each solar day Incorrect
correct idioms - Just as............, so...........
Eliminate - B, C & E
Eliminate D - each solar day modifies contracts , it doesnt intended meaning; outer crust expands and contracts each solar day
So Answer A
A. so the outer crust of the Earth expands and contracts each solar day Correct
B. the outer crust of the Earth has been expanding and contracting each solar day Incorrect
C. there has been, each solar day, an expansion and contraction in the outer crust of the Earth Incorrect
D. so the Earth's outer crust expands and, each solar day, contracts Incorrect
E. similarly, the outer crust of the Earth expands and contracts each solar day Incorrect
correct idioms - Just as............, so...........
Eliminate - B, C & E
Eliminate D - each solar day modifies contracts , it doesnt intended meaning; outer crust expands and contracts each solar day
So Answer A
