41.  Many new medicine do a good effection to deal with the emengecy .

42.  Second, man must deal with the pollution to purify the polluted water.

43.  So, we should do a lot to deal with it, but how?

44.  One way to deal with this serious problem is to use the water in the sea.

45.  Second, we should deal with the polluted water before flowing into the river so that we can protect our water.

46.  Since the water is needed so important , what shall we do to deal with it?

47.  What can we do to deal with the relation between medical need and development need ?

48.  So, how to deal with the problem is very important for us.

49.  How to deal with it?

50.  I think that there is two ways to deal with it.