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His essay was entirely based on data from reliable historical records. A.collecting B.to collect C.collected D.being collected 答案 C 【查看更多】

 

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His essay was entirely based on data ________ from reliable historical records.

A．collecting                                                   B．to collect            

C．having been collected                                  D．collected

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His essay was entirely based on data ________ from reliable historical records．

[　　]

A．collecting

B．to collect

C．having been collected

D．collected

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