31.  First, I think, I would have a full use of these, such as magagizes , newspapers, TV, radios and so on.

32.  Many people argue that there are so many rivers and wells in the world that human beings May have a plenty of fresh water to use.

33.  Another reason is that the increasing of industry, the more water was use to product new works, such as chemistry , predicting material .

34.  In a word, they think there is enough water to use.

35.  The population of world is increasing rapidly, so the use of water in people's life is increasing too.

36.  On the other hand, the increasing use of water in industry and the pollution also lead to the shortage of global fresh water.

37.  Firstly, we should make best use of fresh water.

38.  Second, the use of water in industry is increasing.

39.  We always think that fresh water is too much to use: Rain-water , river-water ..

40.  For example, we can clean sea-water into fresh water, use our intellgient get fresh water we can get .