阿摩線上測驗
60.California condors attract researchers’ interest because they _________.
(A) are active at night
(B) had to be bred in the wild
(C) are found on in California
(D) almost died out in the 1980s
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統計： A(3), B(3), C(2), D(28), E(0) #1802641
統計： A(3), B(3), C(2), D(28), E(0) #1802641
