单选题
______ initial recognition while still quite young.
A、
Most famous scientists achieved
B、
That most famous scientists schieved
C、
Most famous scientists who achieved
D、
For most famous scientists to achieve
【正确答案】
A
【答案解析】
根据句子结构判断，空缺部分应该是句子主句部分。while引导的是时间状语，四个选项中，只有A项是独立、完整的句子。
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