A boasts of the fastest speed in the whole world B depends on technology invented 50 years ago C is known for its futuristic-looking design D surpasses China, France and Spain in terms of innovation

A commuters between New York, Washington and Boston prefer to drive to work B each state in the US has to raise the money on its own to invest in bullet trains C the prospect of a huge network of high-speed trains covering the US is bleak D it's only a matter of time before high-speed rails are built on a large scale in the US

A traffic congestion is a huge problem in many American cities B the last mile challenge for passengers hinders the development of bullet trains inthe US C the horrible layout of American cities demands radical and urgent changes D the US should expand investment in urban mass transportation system

A convenient public transportation system B strict security checks at the local airport C appropriate distances among the major cities in this area D densely populated and prosperous downtown

A Why can't America Have World-class High-speed Trains? B Are Plans for High-speed Rail in the United States Feasible? C About Ready to Roll: American High-speed Rail D Upcoming High-Speed Train Routes in the United States

A produce a skilled technical workforce. B create a culture of innovation. C encourage children to pursue STEM careers. D cultivate the habit of questioning.

A building new technologies. B considering the impacts of inventions. C assessing STEM education. D appraising scientists and inventors.

A condemn the misleading Silicon Valley norm. B illustrate the defects of modern technologies. C demonstrate the great achievement of STEM education. D stress the importance of ethics in technology innovation.

A Most Americans underestimate the importance of STEM education. B Online videos play an important role incommunicating science. C Scientists with advance degrees often lack science communication skills. D Students who choose to study science are those who are entertained by it.

A integrate humanities into its curriculum. B decrease the difficulty of teaching missions. C adapt itself to technology development. D take the future job market into consideration.