如果要正确界定公共利益，通常要遵循（）基本标准。
A.公平
B.合理
C.正当
D.公共
参考答案：A, B, C, D
下列不属于商品期货的标的商品的是( )。
A．大豆B．利率期货C．原油D．钢材
After staying in hospital for long, the patient was advised to go to the seaside to _____ his health.
A．take up
B．pick up
C．carry up
D．make up
