CONTENTS 1
Lesson One The Great Proletarian Cultural Revolution Pushes China’s Science and Technology Forward 1
Lesson Two Text：How Sound Travels 6
Lesson Three Text：Conduction of Electricity 11
Lesson Four Text：Air and Ait Pressure 18
Lesson Five Text：Chemistry 25
Lesson Six Text：China’s Electronic Computers 32
Lesson Seven Text：Forecasting the Weather 39
Lesson Eight Oxidation 45
Lesson Nine Takang Oilfield 50
Lesson Ten Genuine Knowledge Comes From Practice 55
Lesson Eleven Scientific and Technological Contributions by Ancient China’s Working People 61
Lesson Twelve Where Do Correct Ideas Come From？by Mao Tsetung 66
Lesson Thirteen Speech At The Graveside of Karl Marx by Frederick Engels 70
Lesson Fourteen The Presentation of the Question by Marx in 1852（from The State And Revolution Chapter Ⅱ.3）V.I.Lenin 76
总词汇表 82