21世纪大学新英语读写译教程 第4册PDF格式文档图书下载

Unit 1 College Education 1

Lead-in 1

Reading Focus—Text A 2

The Disadvantages of an Elite Education 2

Integrated Exercises 10

Reading Focus—Text B 21

Education Is Supposed to Make You Rich,Not Wealthy 21

Unit 2 Science or Superstition 31

Lead-in 31

Reading Focus—Text A 32

UFO:an Undeniably Fading Obsession 32

Integrated Exercises 40

Reading Focus—Text B 51

A Few Kind Words for Superstition 51

Unit 3 Old and Young 61

Lead-in 61

Reading Focus—Text A 62

Old Before Her Time 62

Integrated Exercises 69

Reading Focus—Text B 79

A Return to Roots 79

Unit 4 Sports and Health 87

Lead-in 87

Reading Focus—Text A 88

Time to Get Moving 88

Integrated Exercises 96

Reading Focus—Text B 107

Get a Killer Bod with Killer Bees 107

Unit 5 Happiness 116

Lead-in 116

Reading Focus—Text A 117

The Long and Short of It 117

Integrated Exercises 124

Reading Focus—Text B 136

Happiness:A Buyer's Guide 136

Unit 6 Ecology 145

Lead-in 145

Reading Focus—Text A 146

The Biology of Global Warming 146

Integrated Exercises 154

Reading Focus—Text B 165

Earth Meanders:Resisting Global Ecological Change 165

Unit 7 Technology and Progress 176

Lead-in 176

Reading Focus—Text A 177

Is Anyone Out There Listening? 177

Integrated Exercises 184

Reading Focus—Text B 195

Why E-mail Has Become the New Snail Mail 195

Unit 8 Humanity and Nature 204

Lead-in 204

Reading Focus—Text A 205

A Long,Melancholy Roar—Are Modern Human Fears Misplaced? 205

Integrated Exercises 213

Reading Focus—Text B 224

Eye of the Tiger 224

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