题型:选择题 The poor boy seems _____ the news that his father died in the car accident for there is no sign of sorrow on his face. A.not to be knownB.not to have received C.to have not receivedD.not to know 查看答案
题型:单项选择题 ()强调从资源配置经济效率的角度分析包括项目外部效果在内的各种经济影响效果,通过费用效益分析及费用效果分析等方法判断建设项目的经济合理性,是政府审批或核准项目的重要依据。A.环境分析B.经济分析C.财务分析D.社会分析 查看答案