问题
单项选择题
慢性肺心病死亡的首要原因是（）。
A.肺性脑病
B.酸碱失衡及电解质紊乱
C.心律失常
D.休克
E.消化道出血
答案
参考答案：A
解析：慢性肺心病多死于并发症，肺性脑病、酸碱失衡及电解质紊乱、心律失常、休克、消化道出血及弥散性血管内凝血（DIC）都是慢性肺心病的并发症。其中肺性脑病是慢性肺心病死亡的首要原因。
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慢性肺心病死亡的首要原因是（）。
A.肺性脑病
B.酸碱失衡及电解质紊乱
C.心律失常
D.休克
E.消化道出血
参考答案：A
解析：慢性肺心病多死于并发症，肺性脑病、酸碱失衡及电解质紊乱、心律失常、休克、消化道出血及弥散性血管内凝血（DIC）都是慢性肺心病的并发症。其中肺性脑病是慢性肺心病死亡的首要原因。
A father is very important for a family. Psychologists（心理学家）say that a strong fatherly influence is important in a child’s _小题2:_. Fathers teach their children _小题3:_ and give them confidence to try new things. A child learns that if something goes wrong, he or she can _小题4:_ dad to help fix it. The psychologists also say that without a dad, a child runs a greater risk of dropping out of school and getting into trouble. |