阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
The compass, gunpowder, papermaking, and printing are the “Four Great Inventions” of ancient China which are celebrated in Chinese culture for their historic 【小题1】 (significant). As early as the Tang Dynasty (618-907), the Chinese 【小题2】 (invent) block printing. In block printing, characters are carved out to make a wood-block printing plate. It is then used to print text. Diamond Sutra, an ancient Buddhist text 【小题3】 (print) in the year of 868 and discovered at Dunhuang Cave in 1900, is the 【小题4】 (old) printed book in the world.
Block printing is a 【小题5】 (cost) and time-consuming process, as each carved block can only be used for a specific page and 【小题6】 single mistake in carving could ruin the whole block. 【小题7】 (overcome) this, Bi Sheng (990-1051) invented movable-type print g during the Song Dynasty (960-1279). Individual characters are carved on identical pieces of fine clay, 【小题8】 are then hardened by fire. The pieces of movable type can then be glued to an iron plate and easily detached (分离). Each individual character can then be installed to print a page and then rearranged as it 【小题9】 (need). When the printing is finished, the pieces are put away 【小题10】 future use.
