10.11南京烤的鸭，感觉listening,reading and writing都在平时准备范围内，但speaking却上了一当，原先的16个topic，看来有增加，望后来的烤友注意。
我的topic:(机井上有的 就不说了) part2:transport by water(航运),the difference between nowadays and the past time? part3:what is the adventage and disvantage in water-transportion? do you think the water-transpotion will be improved in the future?