A、To help the students organize a lecture. B、To answer Professor Hume’s last email. C、To introduce to the students Rosa Parks. D

W: Well, it looks as though I’ll have to come up with something else. I never realize the regulations were so rigid.
Dear all,
    Please read Professor Hume’s email about his next lecture on Rosa Parks.
                                                                    Susan Miller
                                                                    Secretary
Dear Susan,
    Please forward this message to students of my history class.
    Besides the life story of Rosa Parks in the textbook, the students are also required to read the passage below and some related stories that can be borrowed from the school library.
                                                                    Ted Hume
    The early experiences of Rosa Parks (1913-2005), long known as the "mother of the civil rights movement", were not different from those of many African-Americans at that time. The black woman, however, turned the course of American history in December 1955 when she refused to give up her seat on a bus to a white man. "By sitting down," remarked John Lewis, "she was standing up for all Americans."
    Among the numerous awards Parks received in her life were the Presidential Medal of Freedom (1996) and the Congressional Gold Medal (1999).
    Parks died on Oct. 24, 2005 at St. Paul AME Church in Montgomery. A large crowd including Secretary of State Con-doleezza Rice celebrated her life. Rice said she and others, who grew up when the political activities of Parks held public attention, might not have realized her impact on their lives, "but I can honestly say that without Mrs. Parks, I probably would not be standing here as Secretary of State."
    After her casket was placed at the Capitol, U.S. President Bush, members of Congress and ordinary Americans paid their respects. In American history Parks is the first woman to lie in state at the Capitol, a very high regard usually reserved for presidents of the United States.
Questions 26 to 28 are based on the passage you have just heard.
26. What is the main purpose of Susan’s email?
27. What was the political impact of Rosa Parks?
28. How was Rosa Parks treated after her death?