问题
单项选择题
风湿性心脏病最易合并感染性心内膜炎的是（）
A.二尖瓣狭窄
B.主动脉瓣狭窄
C.二尖瓣关闭不全并主动脉瓣关闭不全
D.二尖瓣狭窄并关闭不全
E.二尖瓣狭窄并肺动脉瓣关闭不全
答案
参考答案：C
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风湿性心脏病最易合并感染性心内膜炎的是（）
A.二尖瓣狭窄
B.主动脉瓣狭窄
C.二尖瓣关闭不全并主动脉瓣关闭不全
D.二尖瓣狭窄并关闭不全
E.二尖瓣狭窄并肺动脉瓣关闭不全
参考答案：C
People all over the world celebrate the new year. However, not all countries celebrate in the same way, and in some countries, the new year doesn’t begin on the 1 date very year. In many countries, the new year begins on 1st January, but people start celebrating on 31st December, New Year’s Eve. In New York many people go to celebrate in Times Square. 2 they’re waiting for the New Year, they listen to music, sing traditional songs and have fun. Just before 12 o’clock, everyone 3 down from 10: 10, 9, 8… As soon as it’s 12 o’clock, everyone shouts very 4 , “Happy New Year!” New Year’s Day is often a family day. Some families get together for a special meal. When the weather is fine, many families go out for a 5 . On New Year’s Day, many people make resolutions for the new year. They 6 a list of things, such as “I will help out more with housework. I will work 7 at school than others.” or “I won’t spend so much time playing video games.” When they have made 8 list, they read it to their family or friends and promise to 9 their resolutions. So it doesn’t matter how they celebrate, 10 people in countries all over the world, it’s a time to say goodbye to the old year, and to welcome the new.
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