63.The passage shows that .
(A) the average survival time of condors is satisfactory
(B) Rideout’s research interest lies in electric engineering
(C) the efforts to protect condors bave brought good results
(D) researchers have found the final answers to the problem
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統計: A(3), B(2), C(22), D(2), E(0) #1802644
統計: A(3), B(2), C(22), D(2), E(0) #1802644