下列成语中,“济”的意思与“朝济而夕设版焉”的“济”相同的一项是 ( )
A:事之不济
B:同舟共济
C:假公济私
D:无济无事
读图,回答.
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
计算:
(1)﹣t3•(﹣t)4•(﹣t)5;
(2)(b2n)3(b3)4n÷(b5)n;
(3)tm+1•t+(﹣t)2•tm(m为整数);
I ____ like Beijing Opera ____ ____.