Unit1 1
TextⅠ 1
Part Ⅰ.Warm-up 1
Part Ⅱ.The text: A Big Step Forward 2
Part Ⅲ.Reflection and discussion 3
Text Ⅱ 4
Part Ⅰ.The text:Life in Shenzhou Ⅵ 4
Part Ⅱ.Reflection and discussion 4
Unit2 7
TextⅠ 7
Part Ⅰ.Warm-up 7
Part Ⅱ.The text: Electronics with Nine Lives 8
Part Ⅲ.Reflection and discussion 10
Text Ⅱ 11
Part Ⅰ.The text: Scientists Make Phone That Turns into a Sunflower 11
Part Ⅱ.Reflection and discussion 11
Unit3 13
TextⅠ 13
Part Ⅰ.Warm-up 13
Part Ⅱ.The text:A Worldwide Focus: Cloning 13
Part Ⅲ.Reflection and discussion 15
Text Ⅱ 16
Part Ⅰ.The text: The Path to Dolly 16
Part Ⅱ.Reflection and discussion 16
Unit4 19
TextⅠ 19
Part Ⅰ.Warm-up 19
Part Ⅱ.The text: Why Save Endangered Species? 19
Part Ⅲ.Reflection and discussion 21
Text Ⅱ 22
Part Ⅰ.The text: Endangered Species 22
Part Ⅱ.Reflection and discussion 22
Unit5 24
Text Ⅰ 24
Part Ⅰ.Warm-up 24
PartⅡ.The text:GM Foods—Helping to Feed the World 25
Part Ⅲ.Reflection and discussion 27
Text Ⅱ 28
Part Ⅰ.The text:The Future of GM Foods 28
Part Ⅱ.Reflection and discussion 28
Unit6 30
TextⅠ 30
Part Ⅰ.Warm-up 30
Part Ⅱ.The text:Small Wonders: Nanotechnology 30
Part Ⅲ.Reflection and discussion 32
Text Ⅱ 33
Part Ⅰ.The text:How Nanotechnology Will Work 33
Part Ⅱ.Reflection and discussion 33
Unit7 35
TextⅠ 35
Part Ⅰ.Warm-up 35
Part Ⅱ.The text: Climate Change 36
Part Ⅲ.Reflection and discussion 39
Text Ⅱ 40
Part Ⅰ.The text:Global Warming—Fact or Fiction 40
Part Ⅱ.Reflection and discussion 40
Unit8 42
Text Ⅰ 42
Part Ⅰ.Warm-up 42
Part Ⅱ.The text:Alternative Energy Sources 42
Part Ⅲ.Reflection and discussion 44
Text Ⅱ 45
Part Ⅰ.The text:Heat from the Ground 45
Part Ⅱ.Reflection and discussion 45
Unit9 48
Text Ⅰ 48
Part Ⅰ.Warm-up 48
Part Ⅱ.The text:The Universe 49
Part Ⅲ.Reflection and discussion 51
Text Ⅱ 52
Part Ⅰ.The text: The Future of the Universe 52
Part Ⅱ.Reflection and discussion 52
Unit10 54
TextⅠ 54
Part Ⅰ.Warm-up 54
Part Ⅱ.The text:Being Wrongs Sometimes Wins the Prize 54
Part Ⅲ.Reflection and discussion 57
Text Ⅱ 58
Part Ⅰ.The text:Nobel Prize: Do You Know...? 58
Part Ⅱ.Reflection and discussion 58
Vocabulary 61