Unit 1 Let's Go Part Ⅰ Lead-in Part Ⅱ Study Focus Text The Surprising Purpose of Travel Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills Unit 2 Do As the Romans Do Part Ⅰ Lead-in Part Ⅱ Study Focus Text When in Rome, Do as the Romans Do Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills Unit 3 Elite University Part Ⅰ Lead-in Part Ⅱ Study Focus Text 10 Lessons of an MIT Education (Ⅰ) Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills Unit 4 Life Stories Part Ⅰ Lead-in Part Ⅱ Study Focus Text Audrey Hepburn-A True Angel in This World Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills Unit 5 Arts and Science Part Ⅰ Lead-in Part Ⅱ Study Focus Text I. M. Pei, Modernist Architect Who Revived1 the Louvre, Dies at 102 Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills Unit 6 A Better World Part Ⅰ Lead-in Part Ⅱ Study Focus Text How to Build a Better World Part Ⅲ Ability Enhancement Part Ⅳ Translation Skills