患者男性，37岁，心悸。心电图如图3-15-8所示，应诊断为（）。
A.右束支阻滞，房性期前收缩未下传
B.右束支阻滞合并左前分支阻滞，房性期前收缩未下传
C.右束支阻滞合并二度Ⅰ型房室传导阻滞
D.右束支阻滞合并左前分支阻滞，二度Ⅰ型房室传导阻滞
E.右束支阻滞合并左前分支阻滞，二度Ⅱ型房室传导阻滞
参考答案：D
解析：图中V1导联为连续记录。窦性P波规律出现，PR间期逐渐延长，直到脱漏1个QRS波群，而后PR间期又趋缩短，之后又逐渐延长，呈4:3下传。QRS波群增宽，时间≥0.12s，为完全性右束支阻滞。额面QRS心电轴为-60°。应诊断为窦性心律，右束支阻滞合并左前分支阻滞(双束支阻滞)，二度Ⅰ型房室传导阻滞。
阅读后，完成下面的任务。 Your schooldays should be some of the best and happiest days of your life. You shouldn’t waste this wonderful opportunity to learn. Here is our advice for you to have a happy school-life. 小题1:Don’t say things are difficult or boring. Be interested in school-life and your school subjects. Join lots of activities. Be quick to put your hand up. Go round the school with a big smile. 小题2:School is not a holiday camp. If you are not working, you are not learning, and you are wasting your time at school. Teachers cannot make everything enjoyable. 小题3: If you don’t eat a good breakfast, you will be thinking about food in class. If you go to bed late and do not have enough sleep, you will be sleepy in class. Play some sports to keep your body strong. 小题4:Do not say you will do things tomorrow. If you get behind the class, it is very difficult to get back in front. You cannot finish a race if you rest all the time. 小题5:Everyone fails some tests, loses some matches and has bad days. Friends are not always perfect, and they sometimes say and do unpleasant things. Don’t let small problems seem very big and important. 阅读上面5段语言材料， 从中找出与它们相对应的标题， 并将其标号填入语段前的括号内。其中有两个选项是多余的。
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