herrmayor 发表于 2008-1-29 00:51:36

请教一个语法 请高手帮忙！

We believe that this research summarized the role of P53 in the development of lung cancer, therefore ____ a better understanding for the pathogenesis of lung cancer.
下划线处应该是provides 还是 providing呢 望多多指教 谢谢！
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