Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Japanese scientists have managed to grow tadpole eyes from scratch in the laboratory. They transplanted the eyes into tadpoles. The eyes worked even after the tadpoles changed into frogs. .. More >>