足月儿，C4P1，出生时一般情况好，无青紫窒息，纯母乳喂养，生后12小时即出现黄疸，其母孕期体健，前3胎中，第1胎为人工流产，第2、3胎在生后均因黄疸死亡。
该患儿黄疸的原因最可能为
A. 生理性黄疸
B. 新生儿溶血病
C. 新生儿败血症
D. 新生儿肝炎
E. 以上都不是
查看答案
A．to waitB．waitC．waited
A. to wait
B. wait
C. waited
Why was silk liked by people？
A. Because it was strong.
Because it was cheap.
C. Because it was expensive and only nobles could wear clothes made by silk.
D. Because it was like iron.
检验两样本所在总体的方差是否相等时，应选择的统计方法是E．
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