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问题 单项选择题

石瘿的病因病机是

A．忧思郁怒，湿痰凝结而成

B．气郁湿痰瘀血凝滞而成

C．平素饮水和食物中含碘不足

D．一为忧恚，二为水土

E．产后亏虚，外邪入侵

答案

参考答案：B

解析：[解题思路] 石瘿多由气郁、湿痰、瘀血凝滞而成。[命题规律] 考查“石瘿”。必须掌握。

单项选择题

上皮的棘层或基底层内个别或一群的细胞角化是指( )

A．过度角化

B．棘层增生

C．上皮异常增生

D．角化不良

E．棘层松解
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单项选择题

A nurse performs cardiopulmonary resuscitation (CPR) for 1 minute on an infant without calling for assistance. In reassessing the infant after I minute of CPR, the nurse finds that he still isn't breathing and that he has no pulse. The nurse should then （）.

A．resume CPR beginning with breaths.

B．declare her efforts futile.

C．resume CPR beginning with chest compressions.

D．call for assistance.
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