Tough TOEFL Listening Practice 3

#托福聽力練習 #TOEFLListening #TOEFL Questions 00:12 Practice 1 Bacteria 07:48 Practice 2 Human Interference 17:18 Practice 3 Earth Science Flotsam Science 24:48 Practice 4 Eiffel Tower 32:52 Practice 5 Environmental Geology Natural Gas 41:15 Answer 41:25 Transcription