孕期增加的总能量有多少用于脂肪和组织合成（）。
A.45MJ
B.148.5MJ
C.169MJ
D.33MJ
E.350M
参考答案：C
解析：孕期总能量需要增加，包括提供胎儿生长，胎盘、母体组织增长，孕妇体重增长，蛋白质、脂肪贮存以及增加代谢所需要的能量。据估计，孕期总能量需要增加350MJ，其中148.51MJ用于代谢，169MJ用于脂肪和组织合成，33MJ用于从膳食能量转变为可代谢的能量。
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