单项选择题

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．progenitor

<上一题 目录 下一题>
热门 试题

单项选择题
Despite certain（）habits of the North American screech owl, it performs the majority of its hunting alone, in alpine forests, unfettered by（）.

A．predatory ； ecology
B．instinctual ；behavior
C．exogamous ； kinship
D．omnivorous；diet
E．diurnal； darkness
单项选择题
DIABOLIC:
A．amicable
B．redolent
C．mischievous
D．lavish
E．somber
相关试题