Reading: Main Idea, Detail, Vocabulary, and Inference
What the section tests
iTEP Academic-Core Reading presents short passages on academic and general topics followed by multiple-choice questions. Question types include main idea, specific detail, vocabulary in context, inference, and author's purpose or tone. Passages are brief, so precision matters more than speed-reading.
Concepts to master
- Topic vs. main idea: the topic is what the passage is about; the main idea is the claim the author makes about it.
- Supporting details: examples, statistics, and reasons that back the main idea.
- Context clues: definition, contrast ("however," "unlike"), and example signals help you define unfamiliar words.
- Reference words: this, these, it, they point back to a specific noun phrase.
Traps
- Too narrow: an option that describes one sentence, not the whole passage.
- Too broad: a claim wider than the passage supports.
- True but not the answer: a detail offered when the question asks for the main idea.
- Vocabulary traps: the common meaning of a word rather than its meaning in this sentence.
Worked example
Passage: "Many cities now plant trees along busy roads. Beyond aesthetics, the trees absorb some air pollutants and lower street temperatures. Maintenance costs, however, can be significant." Question: What is the main idea?
- (A) Trees are expensive to maintain. (B) Cities plant roadside trees for environmental benefits despite costs. (C) Trees improve how streets look. Answer: B. A and C are true details but too narrow. Rule of thumb: the main idea should cover every sentence, including the "however" turn.