How much time l spent on study, and how much time l spent on mobile phone? ln fact,most of time lost without knowning. As someone say that mobile phone is a part of the body. like the hand or a leg for the man.

people's life got a humge changes with the development of technology, at the same time,  it made people got some bad habits whatever can not be given up.  Every coins have two sides,  bad things and good things. If good things more than bad things,it is worthy to sacrifice the bad things.