51.  According to a file of the American Health Research, cereals contain more vitamins, proteins, fibre & less fat, sugar than any other foods of the world.

52.  I could see the things in the land become smaller and smaller at last I couldn't see any thing.

53.  We could fund any 0eople there.

54.  The life is much batter then any period past .

55.  In brief, fresh water is so useful to us but we waste it in any way .

56.  We should solve the problem of the pullotion and save every drop of water at any time.

57.  For people's living, we must realize the global shortage of fresh water at first; The second one, we must control the use of the fresh water reasonablly ; The third one, also the important one, we must protect the sourse of fresh water in any way .

58.  People think fresh water is unlimited and we can use it at any time.

59.  Since getting to know the world is very important, I won't give up any opportunity to know the world.

60.  So we waste the good time and can't learn any knowledge .