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Unit 1 1

Part One Pattern Drills and Learning Drills 1

Text: The Uses of Scionce 7

Grammar: The Infinitive 16

Part Two Extensive Reading: Happy Families 19

Listening 24

Unit 2 29

Part One Pattern Drills and Learning Drills 29

Text: Tornadoes 35

Grammar: Present Participle 43

Part Two Extensive Reading: Chinese New Year 46

Listening 52

Unit 3 56

Part One Pattern Drills and Learning Drills 56

Text: Life and Death 62

Grammar: Past Participle 70

Part Two Extensive Reading: Water Pollution 73

Listening 78

Unit 4 82

Part One Pattern Drills and Learning Drills 82

Text: Everybody Helps out 88

Grammar: Gerund 97

Part Two Extensive Reading: Using Reference Books 98

Listening 105

Unit 5 109

Part One Pattern Drills and Learning Drills 109

Text: The Preservation of Food 116

Grammar: Attributive Clauses 124

Part Two Extensive Reading: Insect Zoo 127

Listening 132

Unit 6 138

Part One Pattern Drills and Learning Drills 138

Text: A Young Doctor 144

Grammar: Attributive Clauses 152

Part Two Extensive Reading: Galileo Galilei 155

Listening 159

Unit 7 163

Part One Pattern Drills and Learning Drills 163

Text: Blackout 170

Grammar: Attributive Clauses 178

Part Two Extensive Reading: Canada s School on Wheels 180

Listening 185

Part One Pattern Drills and Learning Drills 190

Unit 8 190

Text: The Olympic Games 195

Grammar: Adverbial Clauses 203

Part Two Extensive Reading: Animal Language 206

Listening 212

Unit 9 216

Part One Pattern Drills and Learning Drills 216

Text: The Loch Ness Monster 223

Grammar: Abverbial Clauses 231

Part Two Extensive Reading: The United Nations 234

Listening 240

Unit 10 244

Part One Pattern Drills and Learning Drills 244

Text: A Hairy Frog 251

Grammar: Adverbial Clauses 258

Part Two Extensive Reading: Conversation with a Bird-watcher 261

Listening 266

Unit 11 270

Part One Pattern Drills and Learning Drills 271

Text: Race 276

Grammar: Noun Clauses 284

Part Two Extensive Reading: Conservation 287

Listening 291

Unit 12 296

Part One Pattern Drills and Learning Drills 296

Text: Frensic Science 302

Grammar: Noun Clauses 310

Part Two Extensive Reading: Our Own Planet 312

Listening 317

Fast Readings 322

1．Disneyland 322

2．Superstitions 324

3．Electricity 326

4．When Were You Born 328

5．Air Pollution 330

6．Orderliness 332

7．The Cheater 334

8．The First American Indians 336

9．The Smell of Fried Fish 338

10．The Greedy Captain 340

11．Natural Resources 342

12．Water 344

Glossary 347