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App Description

The 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.
Books directory:

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

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