综合写作
reading:
Chocoas(ancient people stem from US)had no system to write, so there is no records about how the roads were built.There are three possible reasons for that.
1.move people and commercials
2.for regional faction like ceremony, because a North Road有一段很长的南北方向的路。可能因为人们认为他们的神会通过路找到他们。
3.escaping way for their troops when the enemies came
listening:
the professor challenged the ideas from the reading
1.there were no vehicle and animals to move commercials, so the only way is on foot. But 10 meters wide road is too wide for that.
2.虽然有这样的路，但是没法确认their belief was the same with local people(没听清是现在当地人，还是当时什么地方的人)。
3.They had enough garding for the road,没必要逃跑.besides the road was used not only by the Chocoas people but also by the enemies.有没有证据没听到。
