Tough TOEFL Listening practice 2

#TOEFL #Practice TOEFL Listening lecture part 00:35 Practice 1 Art Oil Painting Impasto 06:16 Practice 2 Astronomy Brown Dwarf 14:10 Practice 3 BIO-Extract Seed Protein 19:41 Practice 4 BIO-Mutualistic Relationship 27:00 Practice 5 Botany 35:28 Answer 35:41 Transcription