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The passage shows that .( )(本题2.5分)
A. the average survival time of condors is satisfactory
B. Rideout’s research interest lies in electric engineering
C. the efforts to protect condors have brought good results
D. researchers have found the final answers to the problem
A. the average survival time of condors is satisfactory
B. Rideout’s research interest lies in electric engineering
C. the efforts to protect condors have brought good results
D. researchers have found the final answers to the problem
参考答案