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TOEFL-style

Levels: B1–C2 · 4 lessons

Section 4

C2 · Lessons 40–434
  1. 40. Tidal flats as nurseries

    5 sentences · Level C2 · 6 min

  2. 41. Reading time from the ground

    5 sentences · Level C2 · 6 min

  3. 42. The faint young Sun puzzle

    5 sentences · Level C2 · 6 min

  4. 43. Office hours about a thesis

    5 sentences · Level C2 · 6 min