男性，36岁，有风心病史多年。查体：颈静脉怒张，肝大、压痛，心尖部舒张期隆隆样杂音；胸骨左缘4、5肋间2/6级收缩期杂音，P2亢进分裂；X线示左心房与右心室扩大。最可能的诊断为
A．二尖瓣狭窄并关闭不全
B．二尖瓣狭窄并器质性三尖瓣关闭不全
C．二尖瓣狭窄并相对性三尖瓣关闭不全
D．二尖瓣狭窄并主动脉瓣狭窄
E．特发性肥厚性主动脉瓣狭窄
参考答案：C
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| It was a winter morning, just a couple of weeks before Christmas. While most people were__1__ their cars, Trevor, my husband, had to __2__early to ride his bike four kilometers away from home to work. On arrival, he __3__his bike outside the back door as he usually does. After __4__10 hours of labor, he returned to find his bike__5__. The bike, a black Kona 18 speed, was our only tool. Trevor used it to get to__6__, putting in 60-hour weeks to __7__ his young family. And the bike was also used to get groceries, __8__us from having to walk long distances from where we live. I was so__9__that someone would steal our bike that I wrote to the newspaper and told them our story. Shortly after that, several people in our area __10__to help. One wonderful stranger__11__ bought a bike, then called my husband to pick it up.__12__my husband had a way to get to and from his job. It really is a (an)__13__that a complete stranger would go out of their way for someone they have never met before. People say that a smile can be __14__from one person to another, but acts of kindness from__15__are even more so. This experience has had a spreading effect in our lives because it__16__our faith in humanity as a whole. And it has __17__us to be more mindful of ways that we, too, can __18__with others. No matter how big or how small, an act of kindness shows that someone __19__. And the results can be__20__. | ||||
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