16.下列那條血管不屬於circle of Willis的一部分?
(A)external carotid artery
(B)internal carotid artery
(C)posterior communicating artery
(D)anterior cerebral artery
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統計: A(1764), B(261), C(173), D(170), E(0) #2626171
統計: A(1764), B(261), C(173), D(170), E(0) #2626171