由群体所确定的，对其成员起约束作用的行为准则称为（）
A、群体准则
B、行为规范
C、组织纪律
D、群体规范
参考答案：D
— What does the fresh juice contain?
— ________of the juice ________ orange. It's very pure.
A．Four-fifth; are
B．Four-fifths; are
C．Four-fifth; is
D．Four-fifths; is
什么是曲率系数（cc）？
