科技英语系列读物 第2级 第1分册 宇宙中的生命PDF电子书下载

Contents 1

1．Life in the Universe 1

2．Killing Pain(Ⅰ) 6

3．Killing Pain (Ⅱ) 12

4．The Eskimos 17

5．The Desert 22

6．Silk 26

7．Cotton 31

9．Salt 41

10．How Electricity is Made 45

8．Iron and Steel 46

11．Skin-Diving 50

12．What Helicopters Do for Us 55

14．Digging Up History 65

13．The Sea World 66

15．How Do the Films Do It 70

16．Cleaning and Mounting Stamps 76

17．Man-made English Bricks 80

18．"Sleeping"Sharks 85

19．Two Kinds of Reader 90

20．On Buying Books 94

21．On the Roof of the World 99

22．A Winter to Remember 103

23．What People Don't Know about Air 108

24．Rockets 113

Glossary 118