问题描述：
20．Helen devoted herself__________to her research and became a top scientist in the field of applied physics.
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考点提示：副词,副词的比较级,疑问副词,连接副词
最佳答案： | C |
| 略 |
20．Helen devoted herself__________to her research and became a top scientist in the field of applied
20．Helen devoted herself__________to her research and became a top scientist in the field of applied
最佳答案： 