Unlock4新版 读写册（含视频转音频）

Unit 8_ 视频The retired men and women who love to walk

Unit 7_ 视频Beijing Art Zone

Unit 6_ 视频The power of the wind

Unit 5_ 视频Government grants for warmer, cheaper housing

Unit 4_视频 Population and water

Unit 3_ 视频Robot _ robotic surgery is on the rise

Unit 2_ 视频Disadvantaged children take part in trial of private tutor app

Unit 1_ 视频China plans revival of Silk Road trade routes

unit1 reading1 IKEA’S Global Success

unit1 reading2 Changing Eating Habits in Italy