TOEFL iBT Reading: Task Types and Strategy

TOEFL iBT Reading now uses three distinct task types within one roughly 30-minute, roughly 50-item section: Complete the Words (fill in partially missing letters in a short text, testing vocabulary knowledge and the ability to infer meaning from surrounding context), Read in Daily Life (short everyday texts -- notices, schedules, messages -- testing understanding of main ideas, key details, and implied meaning), and Read an Academic Passage (university-level material testing main ideas, supporting details, and important vocabulary). This is a real departure from the pre-2026 format's three long, uninterrupted academic passages -- Reading is now intentionally more varied and shorter per item, closer to a mix of real-world and academic reading tasks than one long comprehension exercise.

The section is multistage adaptive: you complete an initial module of items, and your performance on that module determines whether your second module leans harder or easier. There's no way to "game" this deliberately -- the best approach is simply answering every item as accurately as you can, regardless of whether early items feel easy or hard, since the adaptive engine is designed to place every test-taker at an appropriately challenging level either way.

For time budgeting: about 30 minutes for roughly 50 items works out to well under a minute per item on average, but items vary hugely in length and demand. A Complete the Words item is short and vocabulary-focused; a Read an Academic Passage item involves a longer text and more analytical questions. Don't let a short item eat time meant for a longer one, and if you're genuinely stuck on a single item, make your best answer and move on rather than losing time you'll need later in the section.

Below is a short original passage in the Read an Academic Passage style. Practice applying main-idea and detail comprehension to it, alongside two format-recall questions.

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Passage (original, academic style -- bioluminescence in deep-sea organisms):

Bioluminescence -- the production of light by a living organism through a chemical reaction -- is remarkably common among deep-sea species, appearing in an estimated three-quarters of animals living below 500 meters. Unlike terrestrial fireflies, which use bioluminescence primarily for mate attraction, many deep-sea organisms rely on it for a wider range of purposes: luring prey with a glowing lure, startling a predator with a sudden flash, or even communicating with members of their own species in near-total darkness. The chemical basis of the light -- a reaction between a light-emitting molecule called luciferin and an enzyme called luciferase -- is broadly similar across many unrelated species, a pattern that has intrigued biologists because bioluminescence appears to have evolved independently, multiple separate times, rather than descending from a single common ancestor. Researchers studying this convergent evolution argue that the deep sea's near-total absence of sunlight created unusually strong, repeated pressure toward the same basic biochemical solution, even in lineages with no close evolutionary relationship to one another.