全国英语等级考试专用教程 第4级PDF电子书下载

Unit 1 Computer and Information计算机与信息 1

1 Dialogues 1

2 Text：Computer Simulation 2

3 Exercises 6

4 Supplementary Reading：Worse Than a Virus—A Trojan Horse 14

Unit 2 Economy经济 17

1 Dialogues 17

2 Text：Raising Money for Your Business 18

3 Exercises 22

4 Supplementary Reading：The New Economy：What It Really Means 30

Unit 3 Figures人物 33

1 Dialogues 33

2 Text：Why Does Bill Gates Give away His Vast Fortune? 34

3 Exercises 38

4 Supplementary Reading：Freedom Hero：Kofi Annan 46

Unit 4 Manners and Customs风俗习惯 49

1 Dialogues 49

2 Text：American Gastronomy：A Food Tour of the United States 50

3 Exercises 54

4 Supplementary Reading：Christmas in Switzerland 62

Unit 5 City城市 64

1 Dialogues 64

2 Text：The Most Beautiful City in America 65

3 Exercises 68

4 Supplementary Reading：Edinburgh 76

Unit 6 Education教育 79

1 Dialogues 79

2 Text：Education and Social Change in the Postwar Era 80

3 Exercises 84

4 Supplementary Reading：A New Lease on Life：Education for Mature Women 92

Unit 7 Literature and Art文学与艺术 95

1 Dialogues 95

2 Text：The Artist and the World 96

3 Exercises 100

4 Supplementary Reading：American Movies 108

Unit 8 Language and Communication语言与交际 111

1 Dialogues 111

2 Text：Language and Power 112

3 Exercises 116

4 Supplementary Reading：The Art of Conversation 124

Unit 9 Environment环境 127

1 Dialogues 127

2 Text：Is Global Warming Harmful to Health 128

3 Exercises 132

4 Supplementary Reading：Ecotourism 140

Unit 10 Geography地理 143

1 Dialogues 143

2 Text：The Beauty of Britain 144

3 Exercises 148

4 Supplementary Reading：Eurasia 156

Unit 11 Culture文化 159

1 Dialogues 159

2 Text：Why Cultures Differ 160

3 Exercises 164

4 Supplementary Reading：Leisure Time 172

Unit 12 Science and Technology科学与技术 175

1 Dialogues 175

2 Text：Good Gene,Bad Gene 176

3 Exercises 180

4 Supplementary Reading：The Snows of Mars 188

附录1 功能意念表 192

附录2 语言技能表 199

附录3 听力练习录音稿 200

附录4 练习参考答案 231

附录5 单词总表 239

附录6 短语总表 245