Scientists didn’t know much about lung cancer _____.
分类: 英语（高升专）(c0003)发布时间: 2024-11-05 20:11浏览量: 0
Scientists didn’t know much about lung cancer _____. A、before long B、long before C、until recently D、very soon 【正确答案】：C 【题目解析】：before long 没过多久；long before 很久之前；until recently 直到最近；very soon 句意：直到最近科学家们才对肺癌有了更多的了解，因此C符合题意