成本—效益分析适用于()
A.防洪
B.电力生产
C.邮政
D.国防
E.司法裁决
参考答案:A, B, C
瑞典女作家拉格洛夫因一部童话的成功而获得诺贝尔文学奖,这部童话是()。
A.《尼尔斯骑鹅旅行记》
B.《魔法师的帽子》
C.《柳林风声》
D.《长袜子皮皮》
Jimmy felt terribly sorry because he took his deskmate's math book away__________[ ]
A. in mistake
B. by mistake
C. in trouble
D. by wrong