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1.No one call deny the fact that_
2.The idea is hardly supported by facts.
3.Unfortunately,none of the available data shows
4.Recent studies indicate that_
5.There is sufficient evidence to show that.
6.According to statistics proved by_ .It Call be seen
that_
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1.It may give rise to a host ofproblems.
2.The immediate result it produces is___
3.It will exercise a profound influence upon
4.Its consequence can be so great that.
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1.The change in lalgely results from the fact
that_
2.We mayblame _.butthe teal causes ale__
3.Part ofthe explanations for it iS that_
4.One ofthe most common factors/causes iS that
5.Another contributing factor/cause is
6.A number of factors are accountable for mis situation.
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1.Such a statement mainly rests on the assumption that
2.Contrary to what iS widely accepted.I maintain that
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1.A bears some resemblances to B.
2.However,the same is not applicable to B.
3.A and B differ in several ways.
4.Evidently,it has both negative and positive effects.
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