单项选择题
A．make up nearly halt' of the American population B．are deeply interested in making a better life for all people C．have not been given a fair chance before now D．are always finding fault with their parents
A．7 000 000. B．14000 000. C．Twice of the young persons under twenty-five. D．Not mentione
A．Nobody Knows When Salt Began to Be Used B．The Uses and Importance of Salt in History C．Thousands of People Were Punished Because of Salt D．Salt Was Important in History