(1)原式=50×8-21
=400-21
=20-21
=-1;
(2)原式=27+7-107
=-77.
---How did you find out it is my birthday today?
---_______.
A.I mean it
B.A little bird told me
C.It’s a deal
D.Great minds think alike
按照国务院政策要求,应当做到劳务费()
A.月清月结
B.按施工人数结算
C.按工程质量结算
D.按文明标化程度结算
E.按分包合同约定执行