Passage One
Questions 26 to 28 are based on the passage you have just heard.

单项选择题A．The professor will often extend the time limit for assignments.B．The students will gain extra scores for handing in assignments ahead of time.C．The professor will penalize lightly for late assignments.D．The students will lose scores by the day for late assignments.

单项选择题At first, Sam Walton was the owner of a ______.