11.  And the second reason is it can train our determination when we take a long swimming .

12.  Second reason is that goverments of developing countries paid more attention to people's publish and mental living and healthy .

13.  The second reason, success is based on failure .For example, Li Ning was a student, his performance was not good, in order to improve his performance, he did very difficult problems all day, because his base was not good, so his improvement was very slowly , later he asked his teacher why his improvement so slowly, his teacher said that you must do easy problems firstly, then you can do some difficult problems .

14.  Second reason is the development of the economy, people can use much money to buy what they want, so it can be meet the body's needs .

15.  So people don't have to worry about nothing to eat.The second reason is that the medical level is increased too, many illness that could not be cured before can be treated well now .

16.  The second reason is the development of medicine, this makes our body health .

17.  The second reason to support my view is the facts showing that people who have degrees are much welcome than those who haven't in most enterprises or units.

18.  So professional soliders must be more talented than the other kinds of soliders The second reason is that an army which consists entirely of professional soliders can result less death and wound on the battlefield.