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  • 更新 2022-09-04
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 175

Nowadays many people travel across China ________ high-speed trains.

A.

on behalf of

B.

by means of

C.

at cost of

D.

in terms of

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Nowadaysmanypeopletravelacross