问题
单项选择题
阵发性室上性心动过速的心电图诊断，下列哪项不正确（）
A.QRS波群形态可不正常
B.节律一般规则，但亦可有不规则
C.心室率150～250／min
D.可见到逆行P波
E.起始及终止突然
答案
参考答案：B
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阵发性室上性心动过速的心电图诊断，下列哪项不正确（）
A.QRS波群形态可不正常
B.节律一般规则，但亦可有不规则
C.心室率150～250／min
D.可见到逆行P波
E.起始及终止突然
参考答案：B
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| Dick Smith, 1 18 -year-old boy, thinks that the most important people in his 2 are his friends. 3 fact may people like Dick Smith think that their family members (成员) and even their 4 don't know them as well 5 their friends do. In large families, we have already found that brothers and sisters can not get on 6 with each other. It is very important for young people 7 one good friend or a group of friends. They are nearly at the same age and 8 up together. They usually spend a lot of time on the phone. 9 is very important in children's growing up. Because friends can discuss something difficult to say in their families. However some parents often try to choose their children's friends for them. Some parents even stop their children from 10 their good friends. | ||||
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