GRE考试

根据网考网考试中心的统计分析，以下试题在2019/8/27日GRE考试习题练习中，答错率较高，为：91%
【单选题】Previous research has established the lupine wolf as the ------- of the modern canine, but when and where humans first domesticated the former into the latter remains unclear.


A．competitor
B．ally
C．scion
D．prey
E．(E) progenitor