题目内容
关于流产的定义，正确的是
2021-10-13
A.妊娠<28周，胎儿体重<1 000g
B.妊娠<20周，胎儿体重<500g
C.妊娠20〜27周，胎儿体重<500g
D.妊娠20〜27周，胎儿体重<1 000g
E.妊娠12〜20周，胎儿体重<500g
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