30. Crows in this area often collect ______ objects to decorate their nests.
(A) bleak
(B) discreet
(C) glistening
(D) moralistic
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統計: A(116), B(89), C(386), D(91), E(0) #2053381
統計: A(116), B(89), C(386), D(91), E(0) #2053381