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CONTENTS 1

TEXT 1

Lesson 1 Life in Our English Training Class 1

Lesson 2 At the Workshop 4

Lesson 3 Temper Ourselves in Hard Work 7

Lesson 4 I Saw Chairman Mao with My Own Eyes 10

Lesson 5 The Large Electron Microscope 14

Lesson 6 Who Made Me Lose My Fingers？ 17

Lesson 7 Huang Chi-kuang 21

Lesson 8 Metals 25

Lesson 9 On the Long March with Chairman Mao 28

Lesson 10 Liuchuan Brigade Takes on a New Look 34

Lesson 11 Electromagnetic Waves 42

Lesson 12 Something about the Sun 46

Lesson 13 People of the World,Unite and Defeat the U.S.Aggressors and All Their Running Dogs 49

Lesson 14 The Priciple of Radio Communication 53

Lesson 15 Hearts of the Chinese and Soviet Peoples Are Linked 56

Lesson 16 Semiconductors 59

Lesson 17 Four More Dead and Many More to Go 62

Lesson 18 Amid the Gunfire 66

Lesson 19 Serve the People 71

Lesson 20 Where Do Correct Ideas Come from？ 75

Lesson 21 Lenin′s Scientific Method of Work 78

Lesson 22 Eugène Pottier 85

Lesson 23 New Liquid Crystals Developed 90

Lesson 24 Function of Vacuum Tubes 93

Lesson 25 Millimeter Waves 98

SUPPLEMENTARY READING 101

Lesson 1 The Miner and the Coal 101

Lesson 2 Serve the People Heart and Soul 102

Lesson 3 The Cock Crows at Midnight 103

Lesson 4 The Story of Liu Hu-lan 104

Lesson 5 Comrade Chang Szu-teh——a Great Communist Fighter 105

Lesson 6 An Old Catches Up 109

Lesson 7 China′s First Man-made Earth Satellite 111

Lesson 8 Liuchou Rectifier Plant Develops Electronics Industry by Self-Reliance 113

Lesson 9 Direct Current and Alternating Current 115

Lesson 10 The Basic Principles of Electrical Engineering 117

Lesson 11 Electronic Computers 119

Lesson 12 Classification of Radio Waves 121

Lesson 13 Reception 124

Lesson 14 The Electronic Voltmeter 126

Lesson 15 Multimeters 128

Lesson 16 Propagation of Radio Waves 130

Lesson 17 N-Type and P-Type Semiconductor 132

Lesson 18 Forward and Reverse Bias 134

Lesson 19 Learning from Tachai 136

Lesson 20 She Sings on the University Platform 138