2. 外语
  3. As one of the youngest doctors in the hospital, Ms. Lin is on the______of a bright future.

As one of the youngest doctors in the hospital, Ms. Lin is on the______of a bright future.

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问题 As one of the youngest doctors in the hospital, Ms. Lin is on the______of a bright future.
选项 A、verge
B、edge
C、course
D、threshold
答案D
解析 固定搭配题。on the threshold of表示“即将，在……开始之时”，符合句意，故为答案。course不能与on连用构成短语，正确表述是in the course of“在……期间”；verge和edge意思相似，均表示“边缘”，构成题中的短语时，表示“在……边缘，濒于”，多用于表示负面含义。
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