工艺的发展 - 农业

"Why do fireflies glow in the dark?
Why do we fear great heights?
Why do woodpeckers peck on trees?
Why...农业的起源 .............................................................. 2
传统农业 .................................................................. 3
拖拉机的进展 .......................................................... 4
灌溉方法 .................................................................. 5
肥料 .......................................................................... 7
农药 .......................................................................... 8
农药的影响 ........................................................... 10
耕种 ....................................................................... 11
耕种稻田 ............................................................... 12
转基因食品............................................................ 13
农业发展带来的好处 ........................................... 14
农业发展带来的坏处 ........................................... 15
词汇对照表 ........................................................... 16


Why this? Why that? Did you ever get the answer you seek? OR did you just receive a pat answer that says 'that's the way things are'?


There are many questions one can easily ask but hard to get the right answers. Come to think of it, there are many scientific mysteries hidden in our everyday life.


""Happy Dragon 100,000 Whys"" is a collection of questions and answers in everyday life.


Happy Dragon, Boy, Girl, Bob, Papa and Mama are the characters that are involved in the mysteries related to Science. Each mystery is presented in funny and interesting comic illustrations. Each mystery is unravelled in simple language that is comprehensible and related to the scientific fact in question.

"