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目录 1

Lesson one 1

Text: Jets 1

Grammar:The Participle(Ⅰ) 1

Reading Material:You Push It,It Pushes You 1

Lesson Two 16

Text: Up…Up…and Away 16

Grammar:The Gerund (Ⅰ) 16

Reading Material: From Balloons to Rockets 32

Lesson Three 32

Text:Spaceship Earth 32

Grammar:The Attributive Clause(Ⅰ) 32

Reading Material:Changes in the Environment 32

Reading Material:River Life 47

Ⅱ．The Past Future Indefinite Tense 47

Grammar:Ⅰ．Direct and Indirect Speech 47

Text: A Tourist Guide 47

Lesson Four 47

Lesson Five 65

Text: Alexander Graham Bell 65

Grammar:Ⅰ．The Participle(Ⅱ) 65

Ⅱ．The Sequence of Tenses 65

Reading Material:Bell and the First Telephone 65

Lesson Six 83

Text:Paper and Its Uses 83

Reading Material:The World s First Compass 83

Lesson Seven 100

Text:Television:The Modern Wonder of Electronics 100

Grammar:The Infinitive(Ⅲ) 100

Reading Material:Color Television 100

Text:He Called It Penicillin 114

Lesson Nine 114

Grammar:The Attributive Clause (Ⅱ) 114

Reading Material:Beethoven 114

Grammar:Ⅰ．The Subject Clause 114

Ⅱ．The Predicative Clause 114

Text:The Laser 114

Lesson Eight 114

Reading Material:Lasers 114

Lesson Ten 148

Text:The Migration of Birds 148

Grammar:Ⅰ．The Attributive Clause(Ⅲ) 148

Ⅱ．The Appositive Clause 148

Reading Material:The Orientation Ability of Birds 148

Lesson Eleven 166

Text:A Real Flying Saucer 166

Grammar:The Article(Ⅱ) 166

Reading Material:Have You Ever Seen a Flying Saucer? 166

Text:The Changing World 185

Reading Material:How Is the Human Body Dif-ferent from a Machine? 185

Lesson Twelve 185

SuppIementary Readings 203

1．Unique Aircraft 203

2．The First Balloon Flight 203

3．The Mosques of Istanbul 203

4．Good Manners 203

5．The Telephone of Today and Tomorrow 203

6．Glass Goes Modern 203

7．Television 203

8．The Far-Out Laser:Souping Up a Light Beam 203

9．Galileo and the Lamps 203

10．Bacteria 203

11．What Helicopters Do for Us 203

12．Mass Production 203

Appendix 232

Vocabulary 232