The incident __ a driver who accidentally killed a pet dog was made to kneel before the dead animal for

an hour by its owner shocked many people.[ ]

A. which

B. what

C. when

D. where

学习者特征分析可分为哪两方面（）。

A、初始技能与目标技能

B、一般特征和学习特征

C、学习准备和智商

D、情商与智商