单项选择题

Chimpanzees are frequently used as stand-ins for human beings in experiment.

A．partners
B．role-models
C．stand-bys
D．substitute
<上一题 目录 下一题>
热门 试题

单项选择题
The primary objective of Basic Econometrics is to provide an elementary but a comprehensive introduction to the art and science of econometrics.
A．brief
B．precise
C．simplified
D．extensive
单项选择题
Jane and Tom have been able to reconcile their difference and are a happy family again.
A．settle
B．arrange
C．balance
D．pacify
相关试题