因为▲+●=★,
所以★-●=▲.
故选:C.
Mr. Smith asked Jenny some new words and let her to on the blackboard.[ ]
A. write them down
B. write it down
C. write down it
D. write down them
工作评价自成一个系统,评价各个环节环环相扣,相辅相成,体现了工作评价的哪一个原则()
A.能级对应原则
B.优化原则
C.系统原则
D.一致性原则