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App DescriptionThe why "is China's first this popular edition of the encyclopedia, physics, chemistry, astronomy points weather, agriculture, physiological health 5 roll, issue five hundred) that is more than copies. China's young children's film version clubs in January 1961 film version. It is not a book, but as a "set" a version of the works. Its content is very wide, to ask a friend introduced all kinds of ways of scientific knowledge and the text is not long, a shallow development, very He operators in the young readers cognitive style and reading characteristics. It spread knowledge, science popularization in play a positive role, influence generations on the road of science teenagers. In recent years, dubbed the "why" books layer play in endlessly, put a lot of the attention of the frontier problem also into come in, greatly enrich the connotation of the brand.
Why the animal world
Why the information and technology
Why the mystery of the human body
Why sports and country
Why of the plant kingdom
Why the vast universe
Why cultural art
Why of nutrition and health
Why the mystery science
Why the military and the traffic
Why of our earth
Why the Chinese and foreign history
The function of software:
1, iOS5 support.
2, each page preview picture, click on the picture directly into to want to see the page
3. The same page shows the page
4, zoom-in (thumb and index finger operation)
5, support print directly
6, support increased save, fast browsing bookmarks
7, support to send mail books figure and text information
May 21, 2013 New version v5.0
May 15, 2013 Price Decrease: $4.99 -> FREE!
April 26, 2013 Price Decrease: $4.99 -> FREE!
April 24, 2013 New version v4.0
November 18, 2011 Initial Release