정보와 아이디어
도입됨| English | 의미 |
|---|---|
| central idea/ˈsentrəl aɪˈdɪə/ | central idea |
| evidence/ˈevɪdəns/ | 증거 |
| infer/ɪnˈfɜː/ | To reach a conclusion from evidence the text gives. |
The answer that sounds smart
- A short text says a city planted 2,000 trees and summer pavement temperatures fell by 3 °C in those streets. One answer choice says "Trees are the best way to fight climate change."
- That choice sounds wise, but the text never says it. On the SAT, the right answer is the one the text supports, not the one that is true in general.
What this domain tests
- Information and Ideas asks three things: the central idea 中心思想 of a text and its key details, which evidence 证据 (a quotation or a graph) supports a claim, and what you can infer 推断 from what is stated.
- Every answer must be checkable in the text. If you cannot point to the words or numbers that prove it, it is not the answer.
To ____ is to reach a conclusion from what a text states, without the text saying it directly.
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
Inference questions ask what must also be true, given the text.
Read for the claim, then the support
- Find the sentence that makes the main claim; it is often near the end ("This suggests…", "Therefore…"). The other sentences are evidence, background or a contrast.
- For "Which choice best states the main idea?", choose the answer that covers the claim, not a single detail and not more than the text says.
Text: "Earlier studies assumed honeybees navigate only by the sun. A 2021 experiment found that bees released on cloudy days still returned to the hive, using polarised light patterns." Main idea: bees can navigate without seeing the sun directly. Not "Bees cannot see on cloudy days" (contradicted) and not "All insects use polarised light" (too broad).
Text: “Many people think city foxes eat mainly rubbish. Researchers in Bristol examined 150 fox stomachs and found that most of the food was meat from small animals and birds; rubbish made up less than a third.” Which choice best states the main idea?
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
The study found most food was meat and rubbish was less than a third. The other choices are not stated or are too broad.
Evidence from a graph or table
- For a quantitative evidence question, read the title, axes and units first. Then find the one data point that matches the exact claim in the question.
- A choice can describe the graph correctly and still be wrong, because it supports a different claim from the one asked about.
A table shows bike-share trips in one city: 2019 — 40,000; 2020 — 25,000; 2021 — 52,000. Which choice best supports the claim that use recovered and grew after 2020?
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
The claim is about recovery and growth after 2020, so you need 2021 compared with an earlier year. 2021 (52,000) is above 2019 (40,000).
Three common traps
- True but not stated: correct in real life, but missing from the text.
- Too broad / too narrow: the text is about one city, one species or one study; the choice is about all of them, or only about one small detail.
- Extreme words: "always", "never", "proves", "only" are usually stronger than the text.
Supported, or a trap?
Decide whether each answer choice is proved by the text or falls into a common trap.
If an answer choice is a true fact about the world, it must be the correct answer.
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
SAT answers must be supported by the text; a real-world fact that the text does not state is a classic trap.
Recap
- Predict the answer from the text before you read the choices, then pick the choice that the text proves.
- Reject choices that are only true in real life, too broad, too narrow, or too extreme.
- infer: To reach a conclusion from evidence the text gives.
Put the strategy in order.
난이도 3/5 · 200 코인 + 오늘 첫 완료 시 소액 보너스
Predicting before reading the options protects you from attractive traps.