The Song Dynasty was an exciting period in Chinese history. At the height of___36___ (it) power, th

阅读下面材料，在空白处填写 1 个适当的单词或用括号内单词的正确形式。
The Song Dynasty was an exciting period in Chinese history. At the height of___36___ (it)  power, the country’s population doubled. A fast growing economy and strong support___37___ Chinese rulers helped the development of technology and the expansion of knowledge. During this period, a huge number of technological innovations emerged. Many of them had significant practical___38___ (apply).
One particular invention from this period made a mark on the world: moveable type (活字印刷术) — that is, individual blocks that could print a single letter and then ___39___(use) again. This technology finally ended up in Europe several centuries later. The Chinese language uses a huge number of characters,___40___ most European languages use individual letters that combine into  words. Printing texts made up of individual letters___41___ (require) fewer blocks. This invention produced an enormous change in ____42____  (write) communication in Europe and made it easier for a___43___ (grow) number of people to learn to read.
The Chinese were also the first to invent the compass,___44___ changed how sailors navigated the seas. Together with star charts — another Chinese invention — and maps, the compass made sea travel much____45____ (safe).
【答案】36. its    
37. from    38. applications    
39. be used    
40. while/but    
41. requires    
42. written    
43. growing    
44. which    45. safer
【解析】