根据日常摄入量的分布来确定摄人量超过UL者所占得比例，日常摄入量（）UL的这一部分人可能面临健康风险。
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What did he do all this for.
A. To know if animals like chickens could be posted.
B. To amuse the reader with an unlikely answer to the chicken-or-egg puzzle.
C. To know if eggs would break on the way to their destination.
D. To show that he was highly intelligent.
为有效预防胎儿神经管畸形的发生，中国居民膳食营养素参考摄入量推荐孕妇每天额外摄入叶酸（）μg。
A．dependsB．basesC．putsD．focuses
A. depends
B. bases
C. puts
D. focuses
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