英语科普阅读文选PDF电子书下载

Contents 1

1．Hints for Reading Practice 1

2．Of What Is the Soil Made ？ 8

3．Numbers and Mathematics 12

4．The Big Eye 17

5．Early Birds 24

6．Issac Newton 30

7．Uses of Atoms 37

8．Splitting of the Nucleus 42

9．The Four Seasons 46

10．Theory and Practical Application 53

11．Basic and Applied Research 57

12．Plastics 63

13．Automation 70

14．Dispersion and Color 77

15．Worlds in Space 82

16．From the Earth：Greetings 90

17．Zero 96

18．The Spacemen 100

19．Ocean of the Sky 105

20．Methods Used by Scientists 111

21．How Long Is a Micromicrosecond ？ 115

22．How Pictures Move 122

23．Through the Earth’s Crust 127

24．Space Travel 132

25．The Scientific Attitude 138

26．What Is CCTV？ 144

27．The Vegetable Kingdom—Plants（Ⅰ） 150

28．The Vegetable Kingdom-Plants（Ⅱ） 156

29．The Electronic Computer 161

30．Instinct or Cleverness ？ 169