阿摩線上測驗
12. The _______, as a physiological term, is the round colored part of a person's eye which consists of two layers.
(A)iris
(B)pupil
(C)retina
(D)gland
(E)orbit
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統計： A(35), B(14), C(8), D(3), E(0) #2911580
統計： A(35), B(14), C(8), D(3), E(0) #2911580
