先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

    Marco Polo was born in Italy．Here is the story about him．

    In 1271，at 17，Marco went on a1to China．Today,people can go to different places around the world2． But it was very3people to travel then．He,travelled through Europe and Asia4his father and uncle on the Silk Road.The Polos5to China in 1275.

    Marco Polo stayed in China for 17 years.During those years,he6about coal(煤)and paper.These things were7to him,because he didn't see them in Italy before．Marco and his family finally went back to Italy in 1295．They brought(带)some coal and paper back to Italy with8 ． At home．Marco finished a 9about his trip．The Travels of Marco Polo．The book10people his fantastic experiences(经历)in China．