Academic Listening 3 Unit 2 HALS3 – 2.1 HALS3 – 2.2 HALS3 – 2.3 HALS3 – 2.4 HALS3 – 2.5 HALS3 – 2.6 HALS3 – 2.7 HALS3 – 2.8 HALS3 – 2.9