Cambridge Book 20 Test 1
- Questions
- 40
- Sections
- 1
- Last reviewed
Verified Answers
All answers
Questions 1–40- 1 C
- 2 G
- 3 B
- 4 A
- 5 H
- 6 D
- 7 respiratory movements
- 8 tail
- 9 electric currents
- 10 olfactory organs
- 11 electric signals
- 12 sinewy muscle
- 13 electric field
- 14 E
- 15 J
- 16 I
- 17 D
- 18 B
- 19 TRUE
- 20 NOT GIVEN
- 21 FALSE
- 22 TRUE
- 23 NOT GIVEN
- 24 TRUE
- 25 TRUE
- 26 A, C
- 27 A, C
- 28 FALSE
- 29 TRUE
- 30 NOT GIVEN
- 31 TRUE
- 32 TRUE
- 33 FALSE
- 34 past actions
- 35 inconsistencies
- 36 Hugh Everett
- 37 alternative pathway
- 38 non-existence theory
- 39 historical identity
- 40 C
Question Type Breakdown
This Reading test has 40 questions in total: 13 questions testing True/False/Not Given or Yes/No/Not Given statements, 14 questions using multiple-choice, matching-heading, or matching-information formats, and 13 questions requiring sentence, note, table, or summary completion.
How to Use This Answer Key
Attempt the test under timed conditions first (60 minutes for all three passages), then use this key only to mark your own answers rather than reading ahead. For any question you got wrong, go back to the passage and find the specific line or phrase that supports the correct answer instead of just memorizing it — IELTS Reading rewards the skill of locating evidence quickly, not memorized answers.
Last reviewed on August 4, 2026. See our Editorial Policy for how answer keys are checked and corrected. Spotted a mistake? Tell us.