1.角膜(cornea)占眼球表面的:
(A)1/3
(B)1/4
(C)1/5
(D)1/6
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統計: A(429), B(133), C(88), D(1364), E(0) #2183055
統計: A(429), B(133), C(88), D(1364), E(0) #2183055