中学英语拓展阅读丛书 自然科学系列 第2册PDF电子书下载

1 A The History of Space Travel 1

1 B Neil Armstrong:First Person on the Moon 3

2 A What Is a Botanist? 5

2 B Do Plants Feel Pain? 7

3 A Lakes and Rivers 9

3 B Cleaning Up Rivers 11

4 A How Flight Is Possible 13

4 B Helicopters:Form and Function 15

5 A Earth's Layers 17

5 B Making a Model of Earth's Layers 19

6 A The Nobel Prizes 21

6 B Doctors Without Borders 23

7 A The Organs of the Body 25

7 B The Importance of Water in the Body 27

8 A Technology for People with Hearing or Visual Impairments 29

8 B Learning Sign Language 31

9 A The Importance of Vitamins and Minerals 33

9 B The Truth About Vitamin C 35

10 A Gymnastics:A Sport of Balance 37

10 B Training to Be a Gymnast 39

11 A Growing Plants from Seeds—Guaranteed! 41

11 B How Seeds Travel 43

12 A Precipitation 45

12 B Classroom Dew-Point Experiment 47

13 A Why Is the Ocean Blue? 49

13 B Primary Colors of Paint and Light 51

14 A How Humans Hear 53

14 B Sound-Wave Interference 55

15 A The History of Numbers 57

15 B Using Geometry to Solve Everyday Problems 59

16 A Venus:Earth's Sister Planet 61

16 B Galileo's Telescope 63

17 A What Is a Reptile? 65

17 B Poisonous Snakes of the United States 67

18 A The Parts of a Flowering Plant 69

18 B Animal Helpers in the Garden 71

19 A Gravity and Air Resistance 73

19 B Streamlined Trains 75

20 A Some Spiders of North America 77

20 B Dr.Charles Turner,Zoologist 79

21 A Plants and Animals in Ponds 81

21 B What Is an Ecosystem? 83

22 A Computer Memory and Storage 85

22 B From Punch Cards to DVDs 87

23 A Signs of Spring 89

23 B Joseph's Nature Journal 91

24 A Stone,Brick,and Concrete 93

24 B Building the Brooklyn Bridge 95

25 A The Tropical Rainforest Biome 97

25 B Saving the Rain Forest 99

附录 101

Answer Key 101

Reading Rate 103

Comprehension Score 104

Comprehension Skills Profile 105