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31. Many solutions are offered here, all of them make some sense, but none is adequate enough. The problem should be studied in depth. 32. No easy method can be at hand to solve the problem of ______________. But the common recognition of the importance of______________ might be the first step on the right way. 33. It is clear, therefore, that the task of______________ demands great attention. 34. We may have a long way to go before we reach the final goal. But once we are on the way, the chance to reach it is greater. 35. But for me, I would rather think of the matter in an optimistic way. Because I believe ______________. 36. We all know the story of ______________. this lesson tells us that ______________, we should______________. 37. My own point of view is that ______________ is a normal behavior in our society. There is no doubt that ______________. As an old saying goes, ______________. 38. If we cant take useful means, we may not control this trend, and some undesirable result may come out unexpectedly, so what we should do is ______________. 39. However, this graph may not predict the entire situation in the future. I believe ______________. 40. From the graph it is evident that ______________. | 
