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多选题
The cerebral arterial circle is formed by which of following arteries.（ ）
A
anterior communicating artery (前交通动脉) and posterior communicating arteries
B
original portions of the anterior cerebral arteries (大脑前动脉)
C
original portions of the middle cerebral arteries
D
original portions of the posterior cerebral arteries
E
terminal prtions of the internal carotid arteries
答案解析
正确答案：ABDE
