To answer correctly, focus only on the part of the passage that the question refers to. Avoid using information from other parts of the reading or making logical assumptions that go beyond what is stated. The correct answer will always match or closely restate information that appears directly in the text.
Lesson Introduction
Phần 1
Detail questions ask about information that is directly stated in the passage. You do not need to guess or interpret. The correct answer is something that appears clearly in one part of the text. These questions test how well you can find and confirm facts quickly and accurately.
Strategy:
- Read the question carefully. Identify what kind of detail it asks for — a fact, a number, a reason, a description, or a time. This helps you know exactly what to look for when scanning the passage.
- Pick out key words. Choose two or three strong words from the question (for example, names, dates, or main nouns). Be ready to find synonyms or similar phrases, because the passage often uses different words that mean the same thing.
- Scan for the key words or synonyms. Move your eyes quickly through the text until you find the same or similar words. This step helps you jump directly to the correct area instead of rereading the entire passage.
- Read only the surrounding sentences. Once you find the right spot, read that sentence and one before or after it. The answer will be close by — you do not need to read more of the passage.
- Match the meaning, not the exact words. The correct answer will say the same thing as the passage using different words. Wrong choices usually add new information, change small details, or use opposite meanings.
- Eliminate wrong choices quickly.
- ❌ Not mentioned — ideas that never appear in the text.
- ❌ Opposite meaning — says the reverse of what the passage says.
- ❌ Too general or too specific — does not match the question exactly.
- ❌ Partly true — correct at first but adds an incorrect detail.
Daily Life example (Email):
Subject: Meeting Agenda and Preparation
From: Project Coordinator
To: Marketing Team
Dear Team,
Our next marketing strategy meeting will take place on Tuesday at 2:00 p.m. in Conference Room B. Please review the draft campaign proposal beforehand and bring any updated performance data from your assigned channels. Copies of the previous month’s report will be distributed at the start of the meeting. If you are unable to attend in person, please inform me by Monday morning so I can share the video link.
Best,
Andrea
According to the email, what should team members do before the meeting?
- Prepare a presentation about last month’s results
- Send their availability for next week’s meeting
- Review the campaign proposal and bring updated performance data
- Submit vacation requests by Monday morning
Detailed Explanation:
First, look at the key words in the question: “before the meeting” and “team members do.” Then scan the email quickly for the same idea. You will find the sentence: “Please review the draft campaign proposal beforehand and bring any updated performance data from your assigned channels.”
This sentence contains the key time word “beforehand”, which means before the meeting. It lists two clear actions: (1) review the proposal and (2) bring updated data. Option (C) expresses both ideas correctly. It also matches the same meaning using different words.
- (A) is wrong because no one is asked to make a presentation — the report will be given at the start of the meeting.
- (B) is wrong because the email does not ask for availability for next week.
- (D) is wrong because Monday morning is mentioned only for people who cannot attend, not for vacation requests.
By focusing on time words like “beforehand” and scanning for matching ideas, you can locate the correct part of the text and answer within seconds.
Academic Passage example:
Biologists studying migratory shorebirds have long been interested in how these small animals sustain themselves during intercontinental flights. Observations show that before migration, many species nearly double their body weight, storing large amounts of fat beneath the skin. This energy reserve fuels nonstop flights lasting several days across oceans or deserts.
To test how efficiently these birds use stored fat, researchers tracked red knots during their migration from West Africa to northern Europe. Using lightweight satellite tags, they recorded both flight duration and heart rate. The data revealed that birds with higher initial fat deposits maintained lower average heart rates, suggesting that sufficient energy stores reduce physical stress during travel.
In addition to fat reserves, wind conditions significantly influenced the birds’ success. Individuals flying with tailwinds completed the journey faster and used less energy than those encountering headwinds. These results demonstrate that migration performance depends on a combination of physiological preparation and favorable environmental factors.
According to the passage, what factor helped reduce the birds’ physical stress during migration?
- Flying in cooler temperatures
- Traveling in groups of mixed species
- Having large fat reserves before departure
- Resting on islands during long-distance flights
Detailed Explanation:
First, identify the key words: “reduce physical stress” and “during migration.” Scan the passage for these ideas or their synonyms. You’ll find them in the second paragraph: “The data revealed that birds with higher initial fat deposits maintained lower average heart rates, suggesting that sufficient energy stores reduce physical stress during travel.”
This sentence clearly links two ideas — fat deposits and reduced stress. Therefore, the correct answer is (C), which says “having large fat reserves before departure.” It matches the meaning exactly, even though the wording is different.
- (A) Cooler temperatures are not mentioned as a factor.
- (B) Group travel is not discussed.
- (D) Resting on islands is impossible because the passage describes nonstop flights.
By focusing on the right key words and scanning directly to the sentence that mentions them, you can confirm the correct answer quickly without reading the whole passage again.
Tips to Remember:
- Detail questions test your ability to find specific information, not the main idea.
- Scan for key words or synonyms instead of reading every line.
- Read only the sentence that contains the information and check one before and after.
- Match the meaning — the same idea may be expressed in different words.
- Eliminate answers that are opposite, extra, or not mentioned — this saves time and increases accuracy.
This is the final section of the lesson. I'm ready to start the review exercises!
Review Exercise (1/4)
[2] The first and simplest form of agriculture is known as rainfall cultivation. This method involves cultivating only some of the land reserved for agriculture. The uncultivated land was left to fallow, which means the farming plots were left empty to collect rainfall, which helped to revitalize the soil for future crops. This prevented soil from being depleted of nutrients through over farming. This process was abandoned as the population of the empire grew and required larger crops.
[3] In the hilly areas unsuitable for farming by traditional methods, particularly in the highlands, the Aztecs used terrace agriculture. Several stone walls were painstakingly built along the contours of the hillside, one above the other. The earth in each level created by these walls was filled in and flattened, creating a stepped, or terraced, arrangement of land. In this way, a sloped area was transformed into flat steps of land suitable for agriculture. Different types of terraces were used in different circumstances. On steeper slopes, they used hillslope contour terraces, with stone walls, as previously described. On gentler slopes, they created semi-terraces. These were built with less sturdy walls made of Maguey plants instead of stones. Finally, in the least steep areas, they used cross-channel terraces.
[4] The third method of agriculture used by the Aztecs, primarily in the empire’s valley regions, was irrigation farming. This was accomplished by using dams and channels to divert water from natural springs to the fields. What this meant was that crops depended less on rainfall, and thus the Aztecs had greater control over their own agricultural success. Even in dry years, they were able to harvest food for their population. In fact, the Aztecs didn’t invent irrigation farming, but further developed the systems that were already in place. Their achievements in this area involved taking irrigation farming to a whole new level, creating an intricate network of canals, and even redirecting part of the Cuauhtitlan River to bring water to some of their larger plots of agricultural land.
[5] Not all of the Aztecs’ agricultural lands were in regions that required careful management of water; some were in the swampy lands around lakes that were too wet for traditional agriculture. In these regions, they created what they are most famous for, agriculturally speaking: the “Chinampas.” Chinampas were fashioned by laying down alternating layers of mud and plant matter on the bottom of the swamp or lake. Enough layers were laid down to create raised beds rising about a meter above the surface of the water. These raised beds – the Chinampas – were between 2 and 4 meters wide and up to 40 meters long. The Chinampas were built in rows, separated by narrow channels of water, and to tend their crops the Aztecs would move along these channels in canoes. Built within the water, and partly from organic matter, the Chinampas were incredibly fertile. They yielded, on average, seven crops each year, which provided an amazing amount of food per hectare. In fact, the Aztecs managed to grow a surplus of food which they were able to sell to others.
According to paragraph 5, the Chinampas were able to produce a lot of food because
Nộp bài
done Đúng rồi! Đáp án đúng là "((D))".
clear Chưa chính xác. ((D)) mới là đáp án đúng.
(A) 'they were raised above the level of the surrounding land' is incorrect because the paragraph explains they rose above the water surface, but it attributes high productivity to fertility from being built in water and organic material, not simply to being raised.
(B) 'they could only be accessed by canoe' is incorrect because canoe travel describes how the Aztecs tended crops, not why the Chinampas produced a lot of food.
(C) 'they were arranged in long rows' is incorrect because rows and channels describe the layout, but the paragraph links abundant production to the Chinampas’ fertility, not their row arrangement.
Thi lại
[2] Human history (few hunter-gatherer societies remain today) has furnished researchers with numerous examples of hunter-gatherers in different parts of the world. And for years much research focused on these small, mobile, egalitarian groups. But, beginning in the 1970s, some anthropologists questioned whether all hunter-gatherers demonstrated the characteristics listed above. A prime example is the North American native societies of the Pacific Northwest. They are not agriculturalists (farming eventually replaced hunting and gathering in many regions), but they are clearly not the small mobile groups traditionally considered hunter-gatherers. Thus the term “complex hunter-gatherers” came about to describe these societies, and researchers sought to define their characteristics, causes, and conditions for development.
In paragraphs 1 and 2, the author makes which of the points about simple hunter-gatherer societies?
Nộp bài
done Đúng rồi! Đáp án đúng là "((B))".
clear Chưa chính xác. ((B)) mới là đáp án đúng.
(A) 'They exist only in Africa and New Guinea' is incorrect because Africa and New Guinea are given only as examples of places studied, not the only locations where hunter-gatherers exist.
(C) 'They had completely disappeared by the 1970s' is incorrect because paragraph 2 says “few hunter-gatherer societies remain today,” which implies some still exist; it does not claim they were gone by the 1970s.
(D) 'They are inappropriately named' is incorrect because the passage discusses whether all hunter-gatherers share the “simple” characteristics, not that the term “hunter-gatherer” itself is a wrong name.
Thi lại
Jet streams form along the boundaries of warm and cold air masses, so they are strongest where temperature contrasts are greatest. As the current meanders, it steers weather systems below, guiding storm tracks and influencing regional temperatures. When the polar jet arches northward, mild subtropical air can flood mid-latitude cities; when it plunges southward, frigid Arctic air follows. Thus, a single atmospheric ribbon helps determine whether Chicago experiences a heat wave or a blizzard.
Several factors modify the jet stream’s position, including seasonal changes in sunlight, the distribution of ocean heat, and the rotation of Earth. Climate scientists now examine how Arctic warming may weaken the temperature gradient that powers the wind, causing it to slow and wobble more frequently. Such shifts could prolong extreme weather events by pinning high-pressure systems in place. Understanding these trends enables forecasters to refine long-term predictions and help societies prepare for meteorological surprises.
According to the passage, why do commercial pilots closely monitor jet streams?
Nộp bài
done Đúng rồi! Đáp án đúng là "((C))".
clear Chưa chính xác. ((C)) mới là đáp án đúng.
(A) 'To avoid flying through cold regions' is incorrect because the passage discusses warm/cold air boundaries to explain how jet streams form, not as a reason pilots monitor them.
(B) 'To minimize flight delays caused by storms' is incorrect because storms are discussed in relation to weather patterns steered by jet streams, but the pilot example focuses on tailwinds, fuel savings, and avoiding headwinds.
(D) 'To prevent turbulence affecting passengers' is incorrect because turbulence is not mentioned as the reason; the focus is speed and fuel efficiency.
Thi lại
One well-preserved site, Atlit Yam, also yielded human skeletons whose inner-ear crystals record the temperature of the water people drank as children. Oxygen-isotope analysis of those crystals produced a micro-climate timeline that shows gradual warming followed by a mega-drought. Such stress may explain why villagers left the coast before rising seas reached their homes, challenging the assumption that sea-level rise alone forced migration. The find demonstrates how biological and architectural data can combine to address broad historical questions.
The methods used underwater are reshaping archaeological practice. Because excavation occurs by diving, teams rely on 3-D photogrammetry: thousands of overlapping images are merged into digital models that shore-based specialists can study. This remote collaboration reduces time under water and creates a permanent record for future analysis. Critics warn that technology may tempt scholars to trade fieldwork for screen work. Even so, Atlit Yam shows the value of the approach: it revealed postholes too fragile to recover physically, proving that some buildings were partly made of wood—a detail rarely visible at terrestrial Neolithic sites.
What helped archaeologists reconstruct the layout of early Neolithic farming communities so clearly at these underwater sites?
Nộp bài
done Đúng rồi! Đáp án đúng là "((C))".
clear Chưa chính xác. ((C)) mới là đáp án đúng.
(A) 'The settlements were larger than those on land' is incorrect because the passage does not claim the underwater villages were larger; it emphasizes preservation and mapping.
(B) 'More advanced mapping technology was used' is incorrect because sonar helped systematic study, but the passage directly credits clear preservation to seawater sealing the remains, which enabled detailed reconstruction.
(D) 'Villages were never rebuilt or modified' is incorrect because the passage does not say this; instead it explains that seawater prevented later disturbance.
Thi lại
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