改错（满分10分）

I sometimes argue with my mother about if I can watch TV after school. She holds the

view which Senior students have to devote all their time to work hard at their lessons. It

seems to me that once I allowed to do that, I’ll be unable to control me and forget all about

my study .She also thinks it is bad for my eye. Actually I quite understand her, but I really

couldn’t accept her ideas. In my opinion, watch TV can set my mind at rest after a day’s hard

work .Besides, it is important for us to know what have happened at home and at abroad.

Thus, we shouldn’t be forbidden to watch TV.

独立型PLC是独立于CNC装置，具有完备的硬件和软件功能，能够独立完成规定的控制任务的装置。