下列指标中,( )是经济费用效益分析的主要评价指标。
A.经济净现值 B.经济内部收益率C.效益费用比 D.投资回收期
参考答案:A
— He hasn’t finished the work yet.
— Well, he _____.
A.ought
B.ought to
C.ought to have
D.ought to have finished
某企业将自有房产直接捐赠给某希望小学,由于未取得任何收入,不缴纳土地增值税。( )