英语教程 理工科用 第4册PDF电子书下载

Lesson One 2

Text：Can a Computer Think？ 2

Lesson Two 11

Text：Star Wars—and Einstein 11

Lesson Three 21

Text：Are There Strangers in Space？ 21

Lesson Four 35

Text：Noise and the Worker 35

Lesson Five 47

Text：Alfred Nobel—a Man of Contrasts 47

Lesson Six 61

Text：The Years of the Quies Sun 61

Lesson Seven 73

Text：A Visitor from the Past 73

Lesson Eight 85

Text：The Discovery of Radioactivity 85

Lesson Nine 100

Text：Transport in the Future：Air or Sea？ 100

Lesson Ten 117

Text：Saving the Left-overs 117

Lesson Eleven 133

Text：A Robot about the House 133

Lesson Twelve 151

Text：Metals in the Electronic Age 151

SUPPLEMENTARY READINGS 170

Ⅰ Why Read Faster？ 170

Ⅱ Introdtiction 174

Ⅲ Filmless Cameras May Lead Next Boom in Pho-tography 181

Ⅳ Interest Is Growing in Plastics That Can Con-duct Electricity 185

Ⅴ The Age of the Sun 188

Ⅵ Big Numbers and Iafinities 192

Ⅶ Too Many People？ 200

Ⅷ Scientific Knowledge and the Young Scientist 206

Ⅸ Gettysburg Address 212

Ⅹ Dr．Bethune Speaks at the Opening of a New Army Hospital 214

APPENDIXES 219

APPENDIX Ⅰ 220

1．Business Letters 220

2．Abstracts 224

3．Book Reviews 226

4．Instructions to Experiments 231

5．Laboratory Reports 238

6．Instruction Manual 250

APPENDIX Ⅱ 260

Irregular Verbs 260

APPENDIX Ⅲ 261

Vocabulary 261