Psychology ________ the possible problems an individual might have in social interaction with other individuals has an important role to play in modern life．A.deals withB.dealing withC.is dealing withD.dealt with
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B解析这句句子尽管很长，但首先要分析句子结构。主语是psychology，谓语是has an important role，而an individual might have in social interaction with other individuals是作the possible problems的定语从句，省略关系词。而填入的deal with表示“涉及”，作psychology的后置定语，因为和psychology构成的是主动关系，所以我们用现在分词结构。这句句子的意思是“涉及到个人在和其他人的社会交往中可能会出现的问题的心理学在现代社会起了非常重要的作用。”