题目内容

关于流产的临床表现哪项错误：()

A. 流产的主要症状是阴道流血和腹痛
B. 早期流产常先有阴道流血，后有腹痛
C. 晚期流产常先有腹痛，后有阴道流血
D. 妊娠8周前发生流产时，由于绒毛膜未发育成熟，易发生不全流产
E. 羊水检查发现胎儿染色体异常者，应立即终止妊娠

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