一英语阅读Wood-block printing was invented sometime between the 4th and the 7th c_____in China.

一英语阅读Wood-block printing was invented sometime between the 4th and the 7th c_____in China.
The earliest book that we have was p_____ in 868 and was found in a Dunhuang cave.Wood-block printing took a long time because a new blockw was needed for every p____ in a book.By the 11th century printed books could be f_____ all over China.They included books of Confucius' thoughts,dictionaries,and books on maths.In 1340,books couldbe printed using two c_____,black and red.T_____the Chinese learnt about printing so early,printing was not introduced in other parts of the world for hundreds of years.It is thought that when the great Italian traveler Marco Polo visited China in the 13th century,he s_____ printed books.It is possible that Marco- Polo brought that k_____ to Europe.But printed books did not come to Europe u_____1450 when a German called Johann Gutenberg i_____ a printing machine .Twenty-four years later,in 1474,an Englishman called Willian Caxton printed the first printed book in English.His sencod book was about the game of chess.Caxton printed about a hundred books,and some can still be found today in museums.1.______ 2.______3.______4.______5.______6.______7.______8.______9.______10.______