A:5
B:6
C:7
D:8
目前中国有34个省级行政区,即23个省、5个自治区、4个直辖市、2个特别行政区。我国建立省级行政区制度最早在( )
下列关于放射现象、原子核和核能的说法中,正确的是( )
—________ great fun we had at the party last night!
—Yes, it was so exciting that everyone was happy.