皮皮学，免费搜题
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搜题
【单选题】
以下哪项不是上皮组织的特点A.
有极性
B.
无血管
C.
有神经分布
D.
细胞间质多
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皮皮学刷刷变学霸
举一反三
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A.
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B.
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C.
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D.
made
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A.
tea room
B.
tea’s room
C.
room of tea
D.
teas room
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