高毒作业场所应当设置（）色区域警示线、警示标识和中文警示说明，并设置通讯报警设备。
A、红
B、黄
C、橙
参考答案：A
—Do you know how to pronounce this word?
—Yes. I ______ in the dictionary yesterday. [ ]
A. looked it up
B. worked it out
C. gave it away
D. picked it up
简述爱国主义的含义和基本内容。
