单项选择题
A．how to start a university B．the world-famous colleges in America C．how colleges have changed D．what kind of lesson each college teaches
A．football is an old-time tradition B．the Indians taught the Pilgrims to play football C．large families often play football D．most football fans are home from work
A．A whole night. B．Twenty-four hours. C．A whole week. D．Three days.