目录 1
LESSON 10 THE GREAT WALL OF CHINA 1
LESSON 11 AT A TAILOR'S SHOP 6
LESSON 12 POLLUTION 12
LESSON 13 THE FOOTPRINT 18
LESSON 14 WATCHING ANTS 23
REVISION Ⅲ 28
LESSON 15 NAPOLEON'S THREE QUESTIONS 38
LESSON 16 CONTINENTS AND OCEANS 44
LESSON 17 THE STORY OF WILLIAM TELL 49
LESSON 18 A LITTLE HERO 55
REVISION Ⅳ 61
GENERAL REVISION Ⅰ 68
GENERAL REVISION Ⅱ 78
KEY TO EXERCISES 90