— I don't feel very well today. I've got a pain here.
A:Can I take your temperature
B:What's wrong with you
C:Do you have a cough
D:How long have you been like this
I told him that he wasn't welcome in my home.
下列仪器,能加热但应该垫石棉网使用的是( )
如图,PA、PB是⊙O的两条切线,A、B是切点,若∠APB=60°,PO=2,则⊙O的半径等于____.
《中国古代政治制度》专题学习结束后,几位同学画出了“中国封建社会皇权地位演变趋势示意图”,与实际情况基本相符的一幅是( )