中国的中央银行—中国人民银行采用二元式组织形式。()
No one wants to make friends with him, because he always keeps a______face.
A. curved
B. straight
C. long
D. frightening
Weve arranged to go to the cinema on Wednesday, but we can be______and go another day if necessary.
A. changeable
B. moveable
C. flexible
D. fluid
分组交换技术在突发性数据传输过程中表现优异,可以进行充分的资源共享。()