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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