Duolingo English Test practice questions in the real exam format and timing.
Listen to the sentence and type exactly what you hear. "The experiment must be repeated at least three times to confirm the initial results."
Listen to the sentence and type exactly what you hear. "Water freezes at zero degrees Celsius and boils at one hundred degrees Celsius."
Listen to the sentence and type exactly what you hear. "The telescope allows astronomers to observe galaxies that are billions of light years away."
Listen to the sentence and type exactly what you hear. "The researchers published their findings in a leading international science journal last month."
Listen to the sentence and type exactly what you hear. "Plants convert sunlight into energy through a process known as photosynthesis."
Khoa học: laboratory, hypothesis, phenomenon — từ chuyên ngành, nghe 2 lần nếu cần.
Record 90 seconds. You get four criteria, the exact words that slipped, and your own sentence rewritten two levels up.