unit 1 learning a foreign language
unit 2 pop music
unit 3 higher education
unit 4 economy
unit 5 war and conflicts
unit 6 politics
unit 7 digital technology
unit 8 energy crisis
unit 9 natural disasters
unit 10 environmental protection
unit 11 internet and other addictions
unit 12 colorful cultures
unit 13 discoveries
unit 14 arts and literature
unit 15 social interactions
unit 16 law and order
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