饮水型地方性砷中毒病区的判定依据()

A．有高砷水源，有典型慢性砷中毒病人，可排除其它污染

B．有高砷水源存在

C．饮水井含砷量超标，有典型砷中毒病人，井旁长期有含高砷废料堆放

D．有砷中毒病人

E．饮水井被含砷废水污染，有砷中毒病人

One day after an appendectomy, a 9-year-old rates his pain at 4 out of 5 on the pain scale but is playing video games and laughing with his friend. Which of the following would the nurse document on the child's chart

A．The child is in no apparent distress, and no pain medication is needed at this time.

B．The child rates pain at 4 out of 5. Pain medication administered as prescribed.

C．The child doesn't understand the pain scale. Performed teaching to help child match his pain rating to how he appears to be feeling.

D．The child rates his pain at 4 out of 5; however, he appears to be in no distress. Reassess when he's visibly showing signs of pain.