51.  Since then, people had afforted to increase the level of people's life.

52.  The level of living conditions is improved.

53.  (3) The level of medical in developing countries have improved rapitaly .

54.  At first, with the productivity force developing, people have higher living levels.

55.  It's well known that the level of people's life develops so fast.

56.  The level of life is well .

57.  Through thirtly years, their lives level is increasing quickly.

58.  First, the living level has improves with the development of society the second, medical technology can cured many dieseases that they had threft people lives.

59.  Firstly, the leaders of the developing countries have paid more attention to improving the economic level of their country.

60.  The industries are developing more quickly than ever before; The people's living level is increase ; The more hospitals are being built; in developing countries; The wars which brust forth in developing countris is Decreasing.