21．Which month is Martin Luther King Jr．Day in？
A．January．
B．March．
C．August．
D．December．
22．Which of the following is RIGHT？
A．King was born in Tennessee．
B．King led a bus boycott in Alabama．
C．King received the Nobel Peace Prize in 1963．
D．King gave his“I Have a Dream”speech in 1965．
23．How old was King when he died？
A.29．
B.39．
C.65．
D.68．
24．What’s the purpose of the time line in this article？
A．To teach the students to draw a time line．
B．To introduce Martin Luther King Jr．Day．
C．To tell more about Martin Luther King Jr．
D．To explain why whites and blacks were separated．