介绍古代文明的经济变化。两个重要方面，一是货币的出现，便利了贸易，举了个例子，大意是是说没有货币的话，靠易货交换，如果自己的东西别人不想要，交易就做不成了。另一个方面是什么制度的出现，举了中国和罗马的贸易。
第六题讲的是economic development become more complex stimulate:
1. currency 2. acquire new things from a great distance
1. this monetary form makes life easier: a man baked bread and can use money in exchange for coat. this using money to trade aviod the problem that the person who sells the coat does not like bread
2. acquire sth that is far-off: romans can trade silk fabric with chinese, this trading shift from local trading to acquire sth that you otherwise wouldn’t hear
以上就是2月11日新托福机经口语部分，考生们在练习是要落实在真题上，才能更好地了解考试内容结构，最后祝各位考生考出满意的成绩!
