题目内容
The four great inventions in ancient China have become important symbols of China's important role in human civilisation. They are_________, _________, __________and_________.
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Printing has a long history and includes ________ （雕版印刷）and ________（活字印刷）.
The world's oldest surviving book made through block printing is Vajra Sutra.
In the Western Han dynasty, a court official named Cai Lun used inexpensive materials such as bark, hemp （麻头），rags, fishnet and other materials to make paper, known as Cai Lun Paper （蔡侯纸）.
以下程序段的输出结果是_______。int s=1,i=2;do{s=s*i;i++;}while(i<=5);printf("%d\n",s);
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