Chinese mothers are always using other people’s achievements as model       their own children to achieve the same standard.

A．to force

B．forced

C．forcing

D．being forced

( )是争议的认定、处理和解决的唯一依据，借助有效的合同管理，也是避免和解决争议的重要法律基础。

A．合同
B．政策
C．法规
D．协议