1.2 Reading Comprehension
Key Takeaways
Reading Comprehension is the second Verbal subsection and contributes 25 scored items, equal to Word Knowledge
Passages run roughly 150–400 words on health, science, nature, and technology — never on opinion topics requiring outside expertise
The main idea covers the entire passage; supporting details, statistics, and single sentences are distractors for main-idea items
Inference answers must be logically forced by passage evidence — never by outside knowledge or unstated assumptions
Author's purpose on the NEX is almost always to inform or explain; persuade and entertain are usually wrong for factual science passages
Identify the organizational pattern (general-to-specific, cause-effect, compare-contrast, problem-solution) to predict where answers live
Use the read-questions-first APRS workflow so you scan the passage for targeted evidence instead of memorizing everything
Every correct answer is anchored in the text — if you cannot point to the supporting line, the choice is wrong
Reading Comprehension on the NLN NEX
The second half of the Verbal section is Reading Comprehension, worth 25 scored items. You will read short passages — typically 150 to 400 words — on health, science, nature, and technology, then answer four-option multiple-choice questions about each. The NEX never tests passages that require specialized outside knowledge; everything you need to answer correctly is contained in the text itself. That single rule eliminates more wrong answers than any other strategy.
Budget about 3 to 5 minutes per passage-and-questions set, including reading time. Because Word Knowledge items move fast, you can usually afford the upper end of that range on the densest science passage.
The seven question types you will see
| Question type | What it asks | Key strategy |
|---|---|---|
| Main idea | The central point of the whole passage | Test each choice against the first and last paragraphs; the answer must fit all of it |
| Supporting detail | A specific stated fact | Scan for the exact wording; the answer is stated outright |
| Inference | A conclusion implied but not stated | Find the evidence, then ask what logically follows |
| Author's purpose | Why the author wrote it | On science passages, usually to inform or explain |
| Vocabulary in context | A word's meaning here | Re-read the sentence and substitute choices |
| Tone / attitude | The author's stance | Note word choices: neutral, concerned, critical |
| Organizational structure | How the passage is built | Spot the pattern: cause-effect, compare-contrast, general-to-specific |
The APRS reading workflow
Apply this four-step routine to every passage:
- A — Ask: Read the questions first so you know what evidence to hunt for.
- P — Preview: Skim the passage; note each paragraph's topic sentence.
- R — Read: Read carefully, marking facts, numbers, and relationships.
- S — Select: Return to each question and choose the answer the passage supports.
Main idea vs. supporting detail
The most common NEX trap is offering a true detail as the answer to a main-idea question. Keep these straight:
| Concept | Definition | Example |
|---|---|---|
| Topic | The general subject, often one phrase | "Infection prevention" |
| Main idea | The single overall point the passage supports | "Handwashing is the most effective way to prevent infectious disease." |
| Supporting detail | A fact, statistic, or example backing the main idea | "Handwashing reduced respiratory infections by 21% in one study." |
Tip: the main idea answers, "What is the ONE thing the author most wants me to understand?" If a choice is true but covers only one paragraph, it is a detail, not the main idea.
Making inferences without overreaching
An inference is a conclusion the evidence forces, not a guess. Compare:
- Stated: "The patient's blood pressure was 180/110."
- Valid inference: the reading is far above normal and may need intervention.
- Overreach (wrong): "The patient will have a stroke." — not supported.
To answer inference items: (1) locate the evidence, (2) ask what must follow, (3) pick the most strongly supported choice, and (4) reject any option that needs an assumption the text never makes. Beware too-extreme answers using "always," "never," "all," or "none" — passages rarely support absolutes.
Practice Passage 1: Antibiotic Resistance
Read the following passage, then answer the questions below.
Antibiotic resistance is one of the most pressing public health threats of the 21st century. When bacteria are repeatedly exposed to antibiotics, some develop mutations that allow them to survive the drugs. These resistant bacteria then multiply and spread, creating infections that are increasingly difficult to treat. The World Health Organization has identified antibiotic resistance as one of the top ten global health threats.
The overuse and misuse of antibiotics are the primary drivers of resistance. Patients who do not complete their full course of antibiotics allow partially resistant bacteria to survive and evolve. Additionally, the widespread use of antibiotics in agriculture — where they are given to healthy animals to promote growth — exposes environmental bacteria to these drugs, accelerating the development of resistance.
Healthcare professionals play a crucial role through antibiotic stewardship: prescribing antibiotics only when necessary, choosing the most targeted drug available, and educating patients about proper use. Without coordinated global action, common infections that are easily treatable today could become life-threatening within decades.
How to attack it. Paragraph 1 defines the threat, paragraph 2 names the causes, paragraph 3 prescribes the response — a textbook problem-cause-solution structure. The main idea must span all three; any choice that captures only one paragraph (for example, just the WHO ranking) is a supporting detail. For the cause question, the text states the primary driver outright, so do not let a plausible-but-secondary factor like genetic mutation outrank the stated answer.
Based on the antibiotic-resistance passage, what is the MAIN IDEA?
The WHO has ranked antibiotic resistance a top global threat
Bacteria are becoming resistant to all medications
Patients should always finish their antibiotics
Antibiotic resistance is a serious threat driven by overuse that requires coordinated action
According to the passage, what is a PRIMARY driver of antibiotic resistance?
Natural genetic mutations alone
Lack of new antibiotic development
International travel
Overuse and misuse of antibiotics
Based on the passage, it can be INFERRED that:
Antibiotic resistance affects only hospital patients
Antibiotic resistance cannot be reversed
New antibiotics are being developed fast enough to solve the problem
Agricultural use of antibiotics contributes to resistance affecting humans
What is the author's primary PURPOSE in this passage?
To persuade readers to stop taking antibiotics
To compare different types of antibiotics
To entertain readers with a story
To inform readers about the causes and dangers of antibiotic resistance
Practice Passage 2: The Lymphatic System
Read the following passage, then answer the questions below.
The lymphatic system is a network of tissues, organs, and vessels that maintains the body's fluid balance and immune defense. Unlike the cardiovascular system, which uses the heart as a pump, the lymphatic system relies on muscle contractions, body movement, and one-way valves to move lymph fluid through its vessels.
Lymph fluid is a clear, colorless liquid derived from interstitial fluid — the fluid that surrounds cells in body tissues. As blood circulates through capillaries, some plasma leaks into the surrounding tissues. The lymphatic system collects this excess fluid, filters it through lymph nodes, and returns it to the bloodstream via the subclavian veins.
Lymph nodes are small, bean-shaped structures with major clusters in the neck, armpits, and groin. They contain immune cells — lymphocytes and macrophages — that filter pathogens and foreign particles from the lymph. When the body fights an infection, lymph nodes often swell as they produce additional immune cells, which is why a clinician may check for "swollen glands."
How to attack it. This passage moves general to specific: an overview, then lymph fluid, then lymph nodes. A vocabulary-in-context item on "derived" is answered by the next sentence about plasma leaking — "derived from" means originating from. The swollen-node item is an explicit detail: the nodes swell because they produce immune cells, not because they are infected.
According to the passage, how does lymph fluid move through the lymphatic system?
Muscle contractions, body movement, and one-way valves move it
Gravity pulls lymph downward
The heart pumps lymph through the vessels
Lymph nodes create pressure that propels it
Based on the passage, why might lymph nodes swell during an infection?
They produce additional immune cells to fight the infection
They fill with excess blood
They are themselves attacked by pathogens
They stop filtering lymph fluid
The organizational structure of this passage is BEST described as:
Chronological order
Problem and solution
Cause and effect
General to specific (overview followed by details)
Arrange the steps of lymph fluid circulation in the correct order.
Arrange the items in the correct order
Blood plasma leaks from capillaries into surrounding tissues
The lymphatic system collects excess interstitial fluid
Filtered lymph returns to the bloodstream via subclavian veins
Lymph fluid is filtered through lymph nodes
In the passage, the word "derived" most likely means:
Separated from
Destroyed by
Different from
Obtained or originating from
Sections you finish are checked off in the contents.