营养性缺铁性贫血的主要原因是
A.铁的贮存不足
B.铁的摄入不足
C.生长发育快
D.铁的丢失过多
正确答案是B
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Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
After dogs, the horse has the closest( )with man. (relation)