Version 83(G类，九月更新) Task 1: you are in a local company and you want to have a training course in another city. write a letter to your boss.
； ； ； give the details of the course. ； ； ； explain the reason why you need to attend the course. ； ； ； tell him how much time you need to take off from your work.
Task 2:
In the past, we have no computers, Internet, and ...
what is positive and negative effects of these developments
