语法与词汇 10.It's said that Dr. Anderson was breaking fresh______in cancer research.
【正确答案】 D
【答案解析】break new/flesh ground是固定用法,表示“开辟新天地,开始新的事业,有新发现”,如:There’s a pioneering spirit of the need to break new ground.有一种必须开拓创新的精神。