Nelson-Denny Reading Test Reading Comprehension: Identifying Main Ideas 4 — Questions and Answers
Question 1: A passage reads: 'While social media platforms offer connection and information sharing, studies show they also increase anxiety, spread misinformation, and reduce attention spans, particularly among teenagers.' What is the main idea?
- Teenagers should be banned from using social media.
- Social media has both social benefits and documented psychological and informational drawbacks. (Correct answer)
- Misinformation is the biggest problem on social media platforms.
- Social media companies profit from teenage users.
Correct answer: Social media has both social benefits and documented psychological and informational drawbacks.
The passage acknowledges social media's benefits while emphasizing its harms, so the main idea reflects both sides of the issue.
Question 2: What distinguishes an implied main idea from an explicit one?
- An implied main idea is always found in the conclusion.
- An explicit main idea is stated directly; an implied one must be inferred from the details. (Correct answer)
- Implied main ideas are only found in fiction.
- An explicit main idea always appears in the first sentence.
Correct answer: An explicit main idea is stated directly; an implied one must be inferred from the details.
An explicit main idea is directly stated as a topic sentence, while an implied main idea requires the reader to synthesize the details.
Question 3: A passage focuses entirely on how one neighborhood in Detroit was transformed through urban farming, resident involvement, and local investment. The main idea is best described as:
- Detroit is a declining industrial city.
- Urban farming is more productive than traditional agriculture.
- Community-led initiatives can revitalize neglected urban neighborhoods. (Correct answer)
- Local investment is the only solution to urban blight.
Correct answer: Community-led initiatives can revitalize neglected urban neighborhoods.
The specific example of Detroit's neighborhood is used to illustrate the broader point that community effort can transform urban areas.
Question 4: A passage includes this sentence midway through: 'All of these factors point to one conclusion: sleep deprivation poses serious risks to both physical and mental health.' This sentence most likely functions as:
- A transitional detail that introduces a new subtopic
- A restatement of the main idea after supporting evidence (Correct answer)
- A counterargument the author will refute
- An example supporting a larger claim about hospitals
Correct answer: A restatement of the main idea after supporting evidence
Phrases like 'all of these factors point to' signal a restatement of the main idea after supporting details have been presented.
Question 5: Which answer choice to a main idea question should you eliminate first?
- The choice that paraphrases the opening sentence
- The choice that is too specific and covers only one paragraph (Correct answer)
- The choice that uses different wording than the passage
- The choice that mentions the conclusion
Correct answer: The choice that is too specific and covers only one paragraph
Answers that are too specific only cover a supporting detail rather than the whole passage and should be eliminated early.
Question 6: A passage argues that standardized tests measure narrow academic skills, exclude creativity, and disadvantage students from lower-income backgrounds. The last paragraph states: 'Reform is urgently needed.' What is the main idea?
- Standardized tests are popular in American schools.
- Creativity cannot be measured by any test.
- Standardized tests have serious flaws that make reform necessary. (Correct answer)
- Lower-income students score lower on average.
Correct answer: Standardized tests have serious flaws that make reform necessary.
The passage builds a case against standardized tests through multiple criticisms, culminating in the call for reform — that combination is the main idea.
Question 7: In a passage about the Amazon rainforest, paragraphs cover biodiversity, indigenous communities, deforestation rates, and climate regulation. A question asks for the main idea. Which answer is best?
- Deforestation in the Amazon is accelerating rapidly.
- Indigenous communities depend on the Amazon for survival.
- The Amazon rainforest is a complex, irreplaceable ecosystem facing serious threats. (Correct answer)
- The Amazon produces 20% of the world's oxygen.
Correct answer: The Amazon rainforest is a complex, irreplaceable ecosystem facing serious threats.
Only option C is broad enough to encompass all four topics covered in the passage.
Nelson-Denny Reading Test Reading Comprehension: Identifying Main Ideas 4
A passage reads: 'While social media platforms offer connection and information sharing, studies show they also increase anxiety, spread misinformation, and reduce attention spans, particularly among teenagers.' What is the main idea?