题目内容

关于妊娠期钙、铁的代谢，哪项是错误的

A. 近足月胎儿体内含钙约25g
B. 胎儿发育需大量的钙、铁
C. 妊娠期约需铁1g，孕妇铁储备不足，易发生缺铁性贫血
D. 胎儿钙主要在孕末期2个月内积累
E. 母体缺铁时，通过胎盘运输的铁会相应减少

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