Second year listening comprehension exercises

中国的发明创造 (新汉语第三册, P.180)

Click "Listen" to hear the sentences spoken Questions (Place the mouse on the questions to view the answers)
Listen When did the Chinese start producing paper?
Listen Describe the problems of hand-copied books.
Listen When was the printing technique discovered?
Listen Describe the impact of the discovery of the gun powder on the world development.