35．Marco Polo came from a wealthy family and received a good education.He was only six years old when his father and uncle left for a journey to China or Cathay，as it was called at that time.At the age of 17，Marco followed his father and uncle on their second journey to Asia.
The Polos traveled through many countries，over mountains and along the Silk Road，the main travel route for traders.Marco would keep detailed journals and record his findings.The Polos also stopped for a year in the Mongol region.There they learnt about the lives and culture of the people.This was useful as Marco was able to share what he had learnt with the Emperor of China，Kublai Khab.The Emperor was impressed with him.The Polos traveled 9，000 kilometres in more than three and a half years before reaching China.There Marco was most surprised to find the stones that burnt like logs.The Chinese had found a source of fuel that nobody in Europe could have imagined.It was called coal.
In 1298，Marco wrote a book called The Travels of Marco Polo which was a record of his travels in Asia.The book enabled the Europeans to understand and carry out trading activities more easily with Asians.
（1）What was China also called in the past？ （1 word）
（2）What was the Silk Road mainly used as in ancient times？ （no more than 10 words）
（3）What did the Polos do during their stay in the Mongol region？ （no more than 12 words）
（4）Why was Marco impressed with the stones？ （no more than 6 words）
（5）What do you think of Marco Polo？Please explain （no more than 25 words）
