Decide whether the statements are true (T) or false (F) according to the text. ___ 1 The excavated materials were all written by literate officials from the government. ____ 2 The authors of the excavated materials did not intend their writing to be read by later generations. ____ 3 Sven Hedin was aware of the existence of the Silk Road when he was on an expedition. ____ 4 The invention of paper encouraged the printing revolution in Europe. ____ 5 Through cultural transfer, Chinese only borrowed religious terms from Buddhism. ____ 6 The Silk Road made it necessary for people to learn foreign languages. ____ 7 One of the important legacies of the Silk Road is its tolerance of different cultures.