对于妊娠期钙、铁代谢，恰当的是（）

A.妊娠期约需铁1g，孕妇铁储备不足，易发生缺铁性贫血

B.胎儿发育需大量的钙、铁

C.近足月胎儿体内含钙约25g

D.胎儿钙主要在孕末期2个月内积累

E.以上均恰当

Deng Yaping was born _____ February 6th, 1973. [ ]

A. on

B. to

C. at

D. in