A good deal of research is being carried out nowadays______ the cause of juvenile crime. It is obvious that one of these is an u

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问题 A good deal of research is being carried out nowadays______ the cause of juvenile crime. It is obvious that one of these is an unsatisfactory home background.

选项 A、about
B、on
C、into
D、over

答案C

解析 此题考的是介词与名词的搭配。research要求接into,其他几个介词都不对。考生可以从(深入)研究即钻研(进去)的意义出发记忆这个搭配。
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