患者女，26岁，因“产后胸闷、气短2个月，加重1周”入院。既往无特殊病史。当地医院检

Essentially all polar ice forms from precipitation that falls as snow. Extremely cold air cannot hold much moisture and consequently cannot produce much snowfall, in recent years, air masses in both polar regions have been, without exception, extremely cold.
The information above most ply supports which of the following conclusions

A．If polar ice is currently growing and expanding at all, it is doing so only slowly.

B．If air temperatures in the polar regions were considerably warmer, much polar ice would melt off.

C．In the last few years, snowfall in the polar regions has been virtually continuous.

D．The thicker the polar ice is, the colder the air masses that are in contact with it.

E．(E) For snow to turn into ice in the polar regions, the air has to be extremely cold.

强心苷中毒引起的窦性心动过缓可选用（）。

A.阿托品

B.苯妥英钠

C.氯化钾

D.利多卡因

E.氨茶碱

慢性风湿性心脏瓣膜病主要致死原因

A．脑溢血

B．心律失常

C．心力衰竭

D．心源性休克

E．尿毒症

关于公民的民事行为能力，正确的是（）。

A.有民事权利能力就有民事行为能力

B.根据年龄和智力状况，公民的民事行为能力可分为两种

C.达到法定年龄，能够通过自己的独立行为进行民事活动并能独立承担全部民事责任的是完全民事行为能力

D.完全不能以自己的行为取得权利和设定资格的为无民事行为能力

E.不满1O周岁的未成年人为无民事行为能力人

幼儿故事的基本要素有：（）、（）、（）。