关于公平与效率的理解中,下面哪种说法是正确的?( )
【单选题】
Such animals as South China tigers are believed ______,for we've had no track of them for ages .
A.
becoming extinct
B.
to become extinct
C.
to have been extinct
D.
having been extinct
参考答案
参考解析
【单选题】
周末,齐老师到某景区游玩,在停车场偶遇了一位幼儿的家长,家长顺便帮齐老师购买了门票。事后,齐老师坚持把费用还给家长,齐老师的做法体现的是( )。
教师权益的边界性
教师权益的无限性
教师利益的内在性
教师利益的精神性

