One hundred years ago, the invention of the automobile was viewed as a great step (ア). ... Hydrogen-powered vehicles could soon be sold as reasonable prices if governments and automobile manufacturers invest in the development of this nonpolluting technology.
――専修大学 法・経営・ネットワーク情報学部・経済学部国際経済学科・文学部日本語日本文・英語英米文学科(2月12日実施)――2005年