严禁无防护上道作业，严禁单岗在线路上行走，（）必须在路工的监护下作业。
参考答案：劳务工
痰热阻闭心窍之神昏、口噤等症，当选用的药物是（）
A.黄连
B.栀子
C.玄参
D.牛黄
E.连翘心
—Will you please _____ the TV a little? Jack is doing his homework.
—Terribly sorry. I will. [ ]
A. turn down
B. turn up
C. turn on
D. turn off
