Unit 1 生活知识 2
1 Buy Things at a Supermarket 2
2 At the Zoo 5
3 Watching TV 8
4 That's a Problem 11
5 Books onHow to... 14
Unit 2 科学知识 17
1 Air 17
2 It's a Shadow 20
3 Light and Shadow 23
4 Trains 26
5 Man's Brain 29
Unit 3 生物知识 32
1 Kangaroos 32
2 Strong Ants 35
3 A Crow Drinks Water 38
4 Owls 41
5 Can Animals Be Made to Work for Us？ 43
Unit 4 气候知识 46
1 The Sun and the Moon 46
2 Four Seasons 49
3 The Weather in England 52
4 The Worst Storm 55
5 Water 58
Unit 5 旅游知识 61
1 The Leaning Tower of Pisa 61
2 Language Problems in a Foreign Country 64
3 Get Ready for Hiking 67
4 Welcome to Guilin 70
5 A Great Vacation 73
Unit 6 语言知识 76
1 A French Student 76
2 Guess a New Word 79
3 How to Learn Chinese in US Schools？ 82
4 What's a White Lie？ 85
5 How to Make Your Vocabulary Bigger？ 88
Unit 7 节日风俗 91
1 The Halloween 91
2 Christmas Eve 94
3 The Spring Festival 97
4 Christmas Day 100
5 Lucky Numbers 103
Unit 8 地理知识 106
1 The Sea 106
2 The USA 109
3 Australia 112
4 The North of Canada 115
答案 118