社会评价的基本步骤包括( )。
A．社会资料调查
B．识别影响及风险因素
C．社会效益分析
D．方案比选与优化
E．社会风险分析
参考答案：A,B,E
Some of the oranges __________ turned bad. Some of the milk __________ turned sour(酸).[ ]
A. have; has
B. have; have
C. has; have
D. have; is
