--- It was ____________ for man to work in the forest, especially for a woman, like Jane Goodle.

--- Yes, I can’t agree more. It is said that only after her mother came to help her _______ focus on her project.

A．abnormal, was she able to

B．uncommon, she was able to

C．unusual, was she able to

D．extraordinary, she was able to

企业是市场经济中最重要的市场主体。企业研究开发新技术的内在动力是[ ]

A．提高商品质量

B．增加劳动时间

C．增加社会财富

D．获得更多收益