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【题目】China began selling tickets for the Wuhan-Guangzhou high-speed railway, ________ boasts the worlds fastest train journey with a 350km per hour average speed.

A. which B. that C.it D. what

【答案】A

【解析】考查定语从句。句意:中国开始出售往返于武汉和广州的高铁火车票这段路途号称是世界上最快的火车之旅平均速度达到每小时350公里。which在从句中作主语指代the Wuhan-Guangzhou high-speed railway。

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