单项选择题

Passage One\r\n \r\n \r\n

Presidents of America \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n LEGEND: \r\n ◆ Resigned from Presidency \r\n ◆ ◆ Resigned from Vice Presidency \r\n ◇ Died in office \r\n ◇ Assassinated in office \r\n ◇ N Appointed Vice President (Not elected) \r\n # Year President Vice President(s) Party 25 1897-1901 ◇◇ William McKinley Garret A. Hobart (to 1901 ) Theodore Roosevelt (1901) Republican 26 1901-1909 Theodore Roosevelt No Vice President (1901-1905) Charles Fairbanks (1905-1909) Republican 27 1909-1913 William Howard Taft James S. Sherman Republican 28 1913-1921 Woodrow Wilson Thomas R. Marshall Democrat 29 1921-1923 Warren Harding Calvin Coolidge Republican 30 1923-1929 Calvin Coolidge No Vice President (1923-1925) Charles G. Dawes (1925-1929) Republican 31 1929-1933 Herbert Hoover Charles Curtis Republican 32 1933-1945 Franklin D. Roosevelt John N. Garner (1933-1941 ) Henry A. Wallace (1941-1945 ) Harry S. Truman (1945) Democrat 33 1945-1953 Harry S. Truman No Vice President (1945-1949) Alben W. Barkley (1949-1953) Democrat 34 1953-1961 Dwight D. Eisenhower Richard M. Nixon Republican 35 1961-1963 ◇◇John F. Kennedy Lyndon B. Johnson Democrat 36 1963-1969 Lyndon B. Johnson No Vice President (1963-1965) Hubert Humphrey (1965-1969) Democrat 37 1969-1974 ◆ Richard M. Nixon Spiro T. Agnew ◆◆ Gerald R. Ford ※ Republican 38 1974-1977 Gerald R. Ford Nelson A. Rockefeller ※ Republican 39 1977-1981 Jimmy Carter Walter Mondale Democrat 40 1981-1989 Ronald Reagan George Bush Republican 41 1989-1993 George Bush Dan Quayle Republican 42 1993-2001 William Jefferson Clinton (Bill) Albert Gore, Jr. Democrat 43 2001-... George W. Bush Dick Cheney Republican

In which year both president and vice-president resigned their positions（）