[单选题]Why can maglev trains reach unprecedented ground transportation speeds? ( )qox答案窝(daanwo.com)-大学生作业答案及考资分享平台
ABecause of the lack of friction and the trains’ aerodynamic designs.qox答案窝(daanwo.com)-大学生作业答案及考资分享平台
BBecause the speed is twice as fast as Amtrak’s fastest commuter trainqox答案窝(daanwo.com)-大学生作业答案及考资分享平台
CBecause maglev trains are designed to link cities in the future.qox答案窝(daanwo.com)-大学生作业答案及考资分享平台
DBecause people could travel from Paris to Rome in just over two hours.