The scientists are trying to find out the facts to __________ their theory.

A、support

B、carry

C、design

D、oppose
出自:大学英语B2252

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块