单项选择题

According to the passage, male marmoset and tamarin monkeys ______

A．can't defend more than one female
B．practice monogamy
C．get more offspring
D．invest heavily in their partners and the young

<上一题目录下一题>

热门试题

填空题

in→with

填空题

The cancer was kept under control ______ (借助于早期的诊断和治疗).