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【单选题】
啮齿类和灵长类动物的胎盘属于（）。
A.
盘状胎盘内皮绒毛膜胎盘
B.
带状胎盘血液绒毛膜胎盘
C.
盘状胎盘血液绒毛膜胎盘
D.
子叶型胎盘上皮绒毛膜胎盘
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
to be collaborative and altruistic
B.
to act independently and individually
C.
to understand cooperation just as man does
D.
to know how to achieve success with coordinated action