单项选择题
A．Some places are more diverse than others. B．Towns are less diverse than large cities. C．Diversity can be seen everywhere. D．American is a truly diverse country.
A．electrical short-cut. B．lack of fire-satefy measures. C．terrorism. D．not known.
A．Sony developed a computer chip for cell phones. B．Japan will market its wallet phone abroad. C．The wallet phone is one of the wireless innovations. D．Reader devices are available at stores and stations.