34. Bird digestion system has a special part named "crop" which is
(A)connected with small intestine
(B) temporary food storage s
(C) has thick muscle to grind food
(D) part of stomach.
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統計: A(0), B(0), C(1), D(0), E(0) #3207033
統計: A(0), B(0), C(1), D(0), E(0) #3207033