在青铜器上刻写文字始于_____朝,至_____而兴盛。其中_________上铸有的文字,是迄今发现的最长的金文。
商;西周;毛公鼎。
有一个长方体,如果将其长截去2m就得到一个正方体.已知长方体的表面积比正方体的表面积大32m2,那么正方体的棱长是______m.
In order to finish the research, the professor always _______, for every day the light in hisroom didn’t go out until 4 a.m.
A.mixed up
B.cleaned up
C.turned up
D.stayed up