目录 1
分课词汇 1
Lesson 1 Civilization and History 1
Lesson 2 The Fun They Had 2
Lesson 3 Big Numbers and Infinities 4
Lesson 4 Oil 6
Lesson 5 An Observat ion and an Explanat ion 9
Lesson 6 A Robot about the House 13
Lesson 7 A Wrong Man in Workers’ Paradise 16
Lesson 8 Making Surgery Safe 19
Lesson 9 Using Land Wisely 27
Lesson 10 The Karburator 31
Lesson 11 Work and Play 37
Lesson 12 Three Days to See 42
Lesson 13 The Laws of Nature 50
Lesson 14 Spaceship？ 53
Lesson 15 The Wisdom of Socrates 58
Lesson 16 Snapshot of a Dog 61
Lesson 17 Individuals and Masses 67
Lesson 18 Children at Play 72
Lesson 19 Symptoms 78
Lesson 20 How to Avoid Foolish Opinions 83
词汇索引 87