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A new floating bullet train capable of hitting the speed of 600km/h is one step closer to reality in China. Developed by China Railway Rolling Stock Corporation (CRRC), the train is scheduled to go into commercial production in 2021 following tests. Those involved with the project are optimistic it will completely transform China's travel landscape, filling the gap between high-speed rail and air transportation. "Take Beijing to Shanghai as an example, it takes about 4.5 hours by plane, about 5.5 hours by high-speed rail, and would only take about 3.5 hours with the new high-speed maglev," said Ding Sansan, head of the train's research and development team, in a statement.

While the speed of an aircraft is 800-900km/h, at present trains on the Beijing-Shanghai line have a maximum operating speed of 350km/h. Maglev trains use magnetic repulsion both to push the train up from the ground, which reduces friction, and to send it forward. So what comes next? CRRC Qingdao Sifang is constructing an experimental center and a high-speed maglev trial production center, which are expected to begin operating the second half of this year.

It won't be the first train to surpass the 600-kilometer mark when it hits the testing track. A Japan Railway maglev achieved a top spot of 603km/h on an experimental track in Yamanashi in 2015, setting a new world record. Japan is now developing a new Chuo Shinkansen maglev line, with trains set to hit top speeds of about 500km/h. The first phase of the project, connecting Tokyo and Nagoya, which is scheduled to be completed in 2027 and is expected to cut traveling time between those cities by half.

1.What kind of gap will the bullet train fill?

A The size.

B The price.

C The speed.

D The distance.

解析：选C。推理判断题。根据文章第一段第四句的it takes about 4.5 hours by plane, about 5.5 hours by high-speed rail, and would only take about 3.5 hours with the new high-speed maglev可以得知在北京上海之间不同的交通工具需要的时间不一样，因此这种磁悬浮的填补的是速度差距。故选C。

2.What is the cause of maglev with high speed?

A It makes use of magnetic repulsion.

B It goes into commercial production.

C It changes China's travel landscape.

D It is the most optimistic project.

解析：选A。细节理解题。根据文章第二段第二句的Maglev trains use magnetic repulsion both to push the train up from the ground, which reduces friction可以得知该火车的磁力能减少摩擦从来运行速度快。故选A。

3.What will CRRC Qingdao Sifang do?

A It will move to Beijing.

B It will go on experimenting.

C It will stop the maglev trial.

D It will construct many experimental centers.

解析：选B。推理判断题。根据文章第三段第二句的CRRC Qingdao Sifang is constructing an experimental center and a high-speed maglev trial production center可以得知中铁将会在四方区建立实验中心，因此可以推知该公司将会继续实验该磁悬浮列车。故选B。

4.Where can we see the fastest maglev?

A In Tokyo.

B In Beijing.

C In Nagoya.

D In Yamanashi.

解析：选D。细节理解题。根据文章最后一段第二句的A Japan Railway maglev train achieved a top spot of 603km/h on an experimental track in Yamanashi in 2015可以得知Yamanashi创造出了最快的记录。故选D。

5.Which of the followings is TRUE according to this passage?

A The maglev is scheduled to go into commercial production in 2022.

B China is the first country which invents the maglev with the speed of 600km/h, setting a new world record.

C The first phase of the project developed by Japan is scheduled to be completed in 2027.

D The speed of a plane is faster than a maglev,so it would take shorter from Beijing to Shanghai by plane than by maglev.

解析：选C。推理判断题。根据文章最后一段的最后两句话可以得知C表述正确。根据第一段第二句话可以得知A表述错误，应该是在2021年；根据第一段的第四句话北京到上海坐飞机用时4.5小时，而坐磁悬浮列车则用时3.5小时，所以D后半句表达错误；根据最后一段第一句可以得知B表述错误。故选C。