椎管内麻醉术后，患者常规去枕平卧6～8小时，是预防（）。
参考答案：麻醉后头痛
完成下面的对话，每空填一个单词。
A: What 1. is it, Mary?
B: It's Friday.
A: What day is tomorrow?
B: Tomorrow is 2.
A: 3. is the weather today?
B: It's hot.
A: How is the 4. tomorrow?
B: I don't 5.
劳务分包队伍实行百分制，考评结果（）为合格。
A.85~94分
B.80~90分
C.85~90分
D.90~95分
