通俗科技英语文选 第15辑PDF电子书下载

1 Giant-windmill Array (巨型风车群) 1

2 Laser Beacon (激光信标) 3

3 Why the Sky Looks Blue (为什么天空看起来是蓝的？) 6

4 An Automobile Factory (汽车制造厂) 8

5 Ecology (生态学) 12

6 Heretics Triumphant (“异端邪说”的先行者) 15

7 Forest Riches (森林富源) 18

8 Why Do Some Birds Mate for Life (为什么一些鸟类是终身配偶？) 21

9 Dreams of Science (梦与科学) 24

10 Snowflakes (雪花) 28

11 Learning How to Make Rain (学会造雨) 32

12 Questions and Answers (问题与解答) 40

13 Space and Man (Part One)(太空与人 第一部分) 42

14 How to Pilot the Hottest Ship in the Skies (怎样在空中驾驶最新的飞船) 45

15 Test Yourself after the Reading (读后测验) 51

16 The Doppler Effect (多普勒效应) 56

17 Why Do We Get Bad Breath？(为什么我们呼吸里会带有臭味？) 58

18 Volts？Amps？(伏特？安培？) 59

19 Why Knuckles Crack？(为什么指关节会噼啪作响？) 60

Key to the Test(参考答案) 61