2. 外语
  3. These overseas experts came from all _____ of life in different countries.

These overseas experts came from all _____ of life in different countries.

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问题 These overseas experts came from all _____ of life in different countries.
选项 A、runs
B、steps
C、lines
D、walks
答案D
解析 考查固定搭配。all walks of life指“各行各业”，故选D。
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