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Lời nói đầu ...............................................................................................................................

5

Bảng từ viết tắt ........................................................................................................................ 6

Topic 1 Culture identity ........................................................................................................... 7

Topic 2 Education .................................................................................................................. 45

Topic 3 Urbanization ............................................................................................................. 79

Topic 4 Global warming ...................................................................................................... 117

Topic 5 Nature in danger ..................................................................................................... 148

Topic 6 Energy .................................................................................................................... 178

Topic 7 Endangered species ................................................................................................ 207

Topic 8 Preservation ............................................................................................................ 240

Topic 9 Volunteer work ....................................................................................................... 272

Topic 10 Healthy lifestyle and longevity ............................................................................. 305

Topic 11 Life stories ............................................................................................................ 335

Topic 12 Family life ............................................................................................................ 372

Topic 13 Relationship .......................................................................................................... 406

Topic 14 Film and music ..................................................................................................... 437

Topic 15 Entertainment ....................................................................................................... 468

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