Unit 1 Space Exploration 1
Part Ⅰ Theme-Related Reading 2
Text A Apollo 11 Mission 2
Text B Mir 6
Part Ⅱ Reading Strategies 11
Guessing Meaning from Context 11
Part Ⅲ Extensive Reading 14
Section Ⅰ Speed Reading 14
Passage 1 Worlds Away： Astronomers Begin to Uncover Nearby “Super-Earths” 14
Passage 2 Healthy Aging， With Nary a Supplement 18
Section Ⅱ Reading in Depth 20
Passage 1 20
Passage 2 22
Passage 3 23
Section Ⅲ Banked Cloze 25
Unit 2 Energy 26
Part Ⅰ Theme-Related Reading 27
Text A The Tide Is Turning Power 27
Text B Power Beneath Our Feet 31
Part Ⅱ Reading Strategies 36
Activating Prior Knowledge 36
Part Ⅲ Extensive Reading 37
Section Ⅰ Speed Reading 37
Passage 1 Anywhere the Wind Blows 37
Passage 2 Male Chromosome May Evolve Fastest 41
Section Ⅱ Reading in Depth 43
Passage 1 43
Passage 2 45
Passage 3 46
Section Ⅲ Banked Cloze 48
Unit 3 Gender Differences 49
Part Ⅰ Theme-Related Reading 50
Text A As Barriers Disappear， Some Gender Gaps Widen 50
Text B Girl Brain， Boy Brain？ 53
Part Ⅱ Reading Strategies 58
Types of Reading Comprehension Questions 58
Part Ⅲ Extensive Reading 61
Section Ⅰ Speed Reading 61
Passage 1 Numbers Are Male， Said Pythagoras，and the Idea Persists 61
Passage 2 How Much of Human Height Is Genetic and How Much Is Due to Nutrition？ 65
Section Ⅱ Reading in Depth 68
Passage 1 68
Passage 2 70
Passage 3 71
Section Ⅲ Banked Cloze 73
Unit 4 Information Security 74
Part Ⅰ Theme-Related Reading 75
Text A How Do Computer Hackers “Get Inside” a Computer？ 75
Text B ComputerViruses 79
Part Ⅱ Reading Strategies 84
Distinguishing between Facts and Opinions 84
Part Ⅲ Extensive Reading 86
Section Ⅰ Speed Reading 86
Passage 1 How Do Internet Search Engines Work？ 86
Passage 2 Can Cell Phones Cause Brain Cancer？ 90
Section Ⅱ Reading in Depth 93
Passage 1 93
Passage 2 95
Passage 3 96
Section Ⅲ Banked Cloze 98
Unit 5 Future Vehicles 99
Part Ⅰ Theme-Related Reading 100
Text A Flywheels in Hybrid Vehicles 100
Text B SupercarTakes High Road to the Future 104
Part Ⅱ Reading Strategies 108
Reading for Main Ideas 108
Part Ⅲ Extensive Reading 111
Section Ⅰ Speed Reading 111
Passage 1 Future Solutions： Green Jet Fuels 111
Passage 2 Can Smoking Ever Get Safer？ 114
Section Ⅱ Reading in Depth 117
Passage 1 117
Passage 2 118
Passage 3 119
Section Ⅲ Banked Cloze 121
Unit 6 Skyscrapers 122
Part Ⅰ Theme-Related Reading 123
Text A How Skyscrapers Work 123
Text B How to Make Skyscrapers Safer 127
Part Ⅱ Reading Strategies 132
Reading Passages of Cause and Effect 132
Part Ⅲ Extensive Reading 136
Section Ⅰ Speed Reading 136
Passage 1 Burj Dubai Sets Records and Makes Profits 136
Passage 2 Fifty Ways to Interrogate Your Dinner 140
Section Ⅱ Reading in Depth 143
Passage 1 143
Passage 2 144
Passage 3 146
Section Ⅲ Banked Cloze 147
Unit 7 Animal Behavior 148
Part Ⅰ Theme-Related Reading 149
Text A Are Those Apes Really Talking？ 149
Text B Pigs Prove to Be Smart， If Not Vain 152
Part Ⅱ Reading Strategies 156
Reading Passages of Comparison and Contrast 156
Part Ⅲ Extensive Reading 158
Section Ⅰ Speed Reading 158
Passage 1 Good Dog， Smart Dog 158
Passage 2 Genetically Modified Foods—Feed the World？ 161
Section Ⅱ Reading in Depth 164
Passage 1 164
Passage 2 165
Passage 3 167
Section Ⅲ Banked Cloze 168
Unit 8 Natural Disasters 169
Part Ⅰ Theme-Related Reading 170
Text A The Physics of Tsunamis 170
Text B Blind to the End 173
Part Ⅱ Reading Strategies 178
Sequencing Events 178
Part Ⅲ Extensive Reading 180
Section Ⅰ Speed Reading 180
Passage 1 The Big One 180
Passage 2 To Cut Global Warming，Swedes Study Their Plates 183
Section Ⅱ Reading in Depth 186
Passage 1 186
Passage 2 187
Passage 3 188
Section Ⅲ Banked Cloze 190
Key to Exercises 191