READING COMPREHENSION · EXPLICIT EVIDENCE
Work inside one original scientific passage. Every answer returns to a stable paragraph, an exact quotation, and a visible reason each alternative fails.
THE EXPLICIT-EVIDENCE LOOP
Turn names, numbers, relationships, and qualifiers in the stem into search cues.
Read the controlling sentence with enough neighboring context to resolve reference and contrast.
Restate the claim while preserving direction, degree, condition, and scope.
Demand passage evidence for the key and a specific failure mode for every distractor.
TWO PREREQUISITE SKILLS
These items cover only paragraph location and meaning in context. Organization, cross-paragraph integration, inference, and author analysis remain separate skills.
RC-SCI-LOC-01
Common words create too many matches. Names, date ranges, measurements, contrasts, and logical qualifiers narrow the search.
RC-SCI-MEA-01
P02 · CONTROLLING SENTENCE“Water, heat, gases, and organisms can cross their boundaries, but exchange is more restricted than it is during whole-column mixing.”
A faithful paraphrase may change the words, but it cannot turn restricted into impossible or erase the comparison with whole-column mixing.
Who or what does the phrase describe?
Does the relationship rise, fall, enable, restrict, or reverse?
Is the claim possible, likely, typical, or certain?
Under which place, time, group, or scenario does it hold?
How far does the sentence authorize the conclusion to travel?
ORIGINAL-FIRST PROVENANCE
The passage is original DAT TRAIN writing. Its 18 scientific claims map by paragraph to four frozen sources; no official DAT passage or question supplied wording or structure.
Original DAT TRAIN passage written from the frozen scientific source trail. No source wording, official examination content, or memorized test material was reproduced; all scientific claims were independently synthesized and paragraph-mapped.
ONE PASSAGE · SIXTEEN COMPLETE AUDITS
The full passage remains available beside each question. After checking, every option reveals its classification, rationale, exact quotation, paragraph anchor, and frozen character offsets.
Question order and all five answer options are shuffled when you begin. The correct answer stays attached to the same underlying choice.
SOURCE-SET BOUNDARY
These 16 original items intentionally cover only evidence location and meaning in context. The count and even objective split are construction choices, not claims about official item frequency.
The passage and questions remain draft and uncalibrated. Accuracy may guide review, but it cannot estimate an official DAT score. This learner route is open as a public beta; the independently validated Reading release remains pending.
The next route adds a scientifically distinct original passage for organization, separated-evidence integration, and bounded inference without changing this source set.
Continue to the reasoning-chain lab →