77. It can be inferred from the passage that conservation efforts _______.
(A) are effective and well-funded
(B) rely entirely on elephant sanctuaries
(C) have completely stopped illegal hunting
(D) are facing difficulties due to human expansion
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統計: A(0), B(1), C(2), D(39), E(0) #3455033
統計: A(0), B(1), C(2), D(39), E(0) #3455033