When you meet some new words, you can ____ in your dictionary.[ ]

A. look it up

B. look up it

C. look them up

D. look up them

与动态管理相对应的管理原则（）

A.弹性原则

B.预见性原则

C.原则性与灵活性相结合原则

D.随机制宜原则

E.留有余地原则