阅读理解。
Robert Todd Duncan was born in 1903 in the southern city of Danville,Kentucky.His
mother was his first music teacher.As a young man,he continued his music study in Indianapolis,
Indiana.
In 1930,he completed more musical education at Columbia University in New York City.
Then he moved to Washington.For fifteen years,he taught music at Howard University in
Washington.At that time,not many black musicians wereknown for writing or performing
classical music.Teachingat Howard gave Duncan the chance to share his knowledgeof
classical European music with a mainly black student population.He taught special ways
to present the music.These special ways became known as the Duncan Technique.
Besides teaching,Duncan sang in several operas with performers who were all black.
But it seemed that he always would be known mainly as a concert artist.However,his life
took a different turn in the middle 1930s.At that time,the famous American music writer
George Gershwin was looking for someone to play a leading part in his new work Porgy
and Bess.The music critic (评论家) of the New York Times newspaper suggested Todd
Duncan.Duncan had almost decided not to try for the part as he knew it would not be
easy to get it.But he changed his mind.He sang a piece from an Italian opera for Gershwin.
He had sung only a few minutes when Gershwin offered him the part.He became famous
because of the part in Porgy and Bess.
Todd Duncan gained fame as an opera singer and concert artist.But his greatest love
in music was teaching.When he stopped teaching at Howard,he continued giving singing
lessons in his Washington home until the week before his death.
1．What is this passage mainly about?
A．What Robert Todd Duncan loved most.
B．How Robert Todd Duncan became famous.
C．Robert Todd Duncan and his works of music.
D．A brief introduction to Robert Todd Duncan.
2．According to Paragraph 2,while teaching at Howard University,Duncan________.
A．found special ways to present music
B．opened doors for other black classical singers
C．had the chance to know many famous black musicians
D．became known for writing and performing classical music
3．What happened to Duncan in the middle 1930s?
A．He gave up teaching at Howard University.
B．He was introduced by the New York Times in detail.
C．He was asked to be in charge of the opera Porgy and Bess.
D．He was given a big opportunity to become an opera singer.
4．We can infer that Robert Todd Duncan didn't at first want to try for the part mainly
because________.
A．he was too busy to do it
B．he was not interested in it
C．he was not confident enough
D．he didn't want to become famous
5．Based on the passage,what did Robert Todd Duncan love most?
A．Singing in concerts.
B．Writing music.
C．Singing opera.
D．Teaching music