[单项选择]小儿头皮静脉穿刺如果误入动脉，局部可表现为（）
A. 呈树枝分布状苍白
B. 苍白、水肿
C. 条索状红线
D. 充血、发绀
E. 无大变化

A smart man once said that the only thing necessary for the triumph of evil is for good men to do nothing. So, as a policeman , I have some urgent things to say to good people.
Days after days my men and I struggle to stop a tidal wave of crime. Something has gone terribly wrong with our once-proud American way of life. It has happened in the area of values. A principle ingredient is disappearing, and I think I know what it is: accountability.
Accountability isn’ t hard to define. It means that every person is responsible for his or her actions and liable for their consequences.
Of the many values that hold civilization together — honesty, kindness, and so on — accountability may be the most important of all. Without it, there can be no respect, no trust, no law — and, ultimately, no society.
My job as a policeman is to impose accountability on people who refuse, or have never learned, to impose it on themselves. But as ever
A. it' s unnecessary for good people to do anything in face of evil.
B. it's certain that evil will prevail if good men do nothing about it.
C. it's only natural for virtue to defeat evil.
D. it's desirable for good men to keep away from evil.