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naknowledge of ann and its uses are very rare. few people in china have studied this topic and consequentlythe materials that are available on ann are limited. working on this difficult projectnot only did mr. wang rise to the challengebut he went above and beyond the call of duty to analyze his secondary sources and test them for accuracy in practice. in this wayhe found mistakes in the book that we use. his diligence and hard work made me extremely proud of him.mr. wang is an intelligentmotivatedand industrious inspanidual. teaching and advising him has been a delightful pleasure. i know that if given the chance to study abroad in americahe will arm himself to bee a great programmer he dreams of being. he has the intelligence and background to achieve these goals now all he needs is the opportunity. i ask that you look upon his application favorably and grant him a chance to s