Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20.

How many stripes were there on American flag after 1817

A．Events related to the inauguration cost a lot to organize.
B．Newly inaugurated presidents give a speech, officially called an inaugural address.
C．Chief Justice William Rehnquist has pancreatic cancer.
D．Pennsylvania Avenue is a wide street with the Capitol at one end and the White House at the other.

A．Anne Sullivan helped her get ready for school and college.
B．Helen Keller was 13 years old when she started at Radcliffe College in Massachusetts.
C．Helen Keller worked for many years for the American Foundation for the Blind.
D．Helen Keller died in nineteen sixty-eight.