麻疹的临床特征是什么
参考答案：麻疹的临床特征：① 发热；② 上呼吸道炎症；③ 麻疹黏膜斑；④ 全身斑丘疹；⑤ 退疹后皮肤留有糠麸状脱屑及色素沉着。
The old lady was caught in such a frightened storm that we all worried about her.
胎儿神经管畸形筛查中最可靠的指标是
A．E2 B．HCG C．μE3D．PRL E．AFP
