A、At the beginning. B、In the middle. C、One week before the end. D、At the end. B下个星期五就是期中考试(midterm exam)，可见，现在正处于一学期的中间，正确答案是B。

In the few minutes that remain of today’s class, I’d like to discuss next week’s schedule with you. Because I’m presenting a paper at a conference in Detroit on Thursday, I won’t be here for either Wednesday’s or Friday’s class. I will, however, be here for Monday’s. Nex Friday, a week from today, is the midterm exam, marking the halfway point in the semester. Professor Andrews has agreed to administer the exam. In place of the usual Wednesday class, I’ve arranged an optional review session. Since it is optional, attendance will not be taken: however, attending the class would be a good idea for those worr.ed about the midterm. So, remember:optional class next Wednesday: midterm, Fritay.
1. What is the purpose of the talk?
2. At what point during the semester does this talk take place?
3. What did Professor Andrews agree to do?
4. What will occur at next Wednesday’s class time?