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    The book was written careful observations and detailed studies. A. on the ground of B. on behalf of C. on average D. on the basis of 【查看更多】

     

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    28. The book was written _____ careful observations and detailed studies.

      A. on the ground of        B. on behalf of                  C. on average        D. on the basis of

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    The book was written _____ careful observations and detailed studies.

      A. on the ground of           B. on behalf of              C. on average         D. on the basis of

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