问题
单项选择题 A1/A2型题
二度Ⅰ型房室传导阻滞的心电图特征是（）
A.P-R间期进行性缩短
B.R-R间距进行性延长
C.固定的房室3：1传导
D.P-R间期进行性延长，伴QRS波脱漏
E.R-R间期进行性延长，伴QRS波脱漏
答案
参考答案：D
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二度Ⅰ型房室传导阻滞的心电图特征是（）
A.P-R间期进行性缩短
B.R-R间距进行性延长
C.固定的房室3：1传导
D.P-R间期进行性延长，伴QRS波脱漏
E.R-R间期进行性延长，伴QRS波脱漏
参考答案：D
Every school has its own rules. Then I will talk one of the rules. At some schools, the students to wear uniforms on school days. But many students don’t to wear their school uniforms. think the uniforms are the ugliest (最丑的) in the world. But the schools allow (允许) students to wear own clothes at school. So some students cartoons or some famous singers on their . They think it is very that everyone wears the same. It very unfair(不公平的) that teachers and students wear clothes . But most of the students the rules. What do you think it? Do you your school uniform?
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