21.  For another, the more and more population require more and more fresh water.

22.  Then we can require fresh water from the sea and the water of sea will not be outused .

23.  Today with the increase of the population and the development of industry, we require much more fresh water, but the resource of fresh water becomes smaller and smaller for the pollution.

24.  Just as air and food, water is also the fundemental require in our life.

25.  Morever , the development of industry, requires more and more fresh water.

26.  In present, with the increasing of population and industry, the require of fresh water is increasing.

27.  At the same time, with the development of industry, not only require a lots of fresh water but also the wasted water which piped from some factories went into some rivers and polluted it .

28.  The developing sciety now requires college students go to out the campus sometimes.

29.  Now, our society is developing with rapid progress, great changes are happening everyday, so we are required to get to know the world outside campus .

30.  A student, however creative and intelligent, will not be admitted into a college if his total scores are just one point less than required.