Educator Helen Magill White was the first woman______the Ph. D. Degree.

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问题 Educator Helen Magill White was the first woman______the Ph. D. Degree.

选项 A、having earned
B、to have earned
C、to earn
D、earning

答案C

解析 本题考查习惯用法。the first…to do为习惯用法,表示“第一个做……”,故答案为[C]项。句意:教育家海伦-麦吉尔-怀特是第一个获得博士学位的女性。
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