A:50 N
B:60 N
C:70 N
D:120 N
北宋史学家司马光主持编写的____是我国第一部编年体通史巨著。北宋毕昇发明的____是我国四大发明之一。
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
十月革命的历史功绩是 ( )