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【题目】China’s high-speed railways _________ from 9,000 to 25,000 kilometers in the past few years.

A. are growing B. have grown C. will grow D. had grown

【答案】B

【解析】考查时态。句意:在过去的几年里,中国的高速铁路已经从9,000公里增长到25,000公里该句时间状语为in the past few years。中国高速铁路的增长是从过去一直到现在几年里的情况,故该句应用现在完成时态。B选项正确。

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