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问题 单项选择题

女，25岁，因活动后气促、心悸3年就诊，体检发现心浊音界向左下增大，心腰加深，心界似靴形改变，其原因最可能是（）

A.主动脉瓣关闭不全

B.肺源性心脏病

C.扩张型心肌病

D.单纯二尖瓣狭窄

E.高血压性心脏病

答案

参考答案：A

阅读理解

根据短文，判断正(√)误(×)。

        Many years ago,there was an old man in New York. He didn't like children at all. But he  liked cats

very much. He had black cats and white cats. He had mother cats and baby cats. So children often came

to his house. They came to play with cats. More and more cats came to the old man's house. The old man couldn't give the cats much food. So he gave each child a cat. The children were very happy. The old man was very happy, too.

( ) 1. The old man came from America.

(     ) 2. The old man liked children very much.

(     ) 3. The old man had many cats.

( ) 4. The old man didn't have much food for the cats.

( ) 5. Each child had got a cat at last.
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单项选择题

病人男性，62岁，恶心、食欲缺乏，水肿，查体血肌酐、血尿素氮升高，B超示双肾缩小，诊断为慢性肾衰竭，此时若病人出现酸碱平衡紊乱，可能是（）

A.代谢性酸中毒

B.代谢性碱中毒

C.呼吸性酸中毒

D.呼吸性碱中毒

E.混合型酸碱失衡
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