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( 3 ) . The third reason is ( 4 ).To sum up ,the main cause of XX is due to ( 5 ) . It is high time that something were done upon it. For one thing ,( 6 ).On the other hand ,( 7 ). All these measures will certainly reduce the number of XX .Generation gap。模塊(2) These days we often hear that ( 1 ).It is mon that ( 2 ). Why does such circumstance occur in spite of social protects? For one thing ,( 3 ).For another,( 4 ). What is more, since ( 5 ),it is natural that ( 6 ). To solve the problem is not easy at all ,but is worth trying .We should do something such as ( 7 )to improve the present situation ,and I do believe everything will be better in the future .注釋?zhuān)篛n Students Choosing Lectures