【单选题】Shopping habits in the United States have changed greatly in the last quarter of the twentieth century. (1)_____ in the 1990s most American towns and cities had a Main Street. Main Street was always i...
【简答题】Women also are more active in sports now because of two changes. First, in the early twentieth century, women began to compete regularly in the Olympics. Also, the number of s for women in the Ol...