简答题 Introduction: Basically there are two teaching methods.
1. Lecture method:

A. He did poorly on the first exam.
B. He got more than eighty percent right.
C. Eighty percent of the students did well.
D. He did much better than he thought.

A. to explain to us what a "tip-of-the-tongue" memory lapse is
B. to describe in detail the nature of memory
C. to tell us some new developments of scientific research on memory and learning
D. to discuss some ways of improving both our memory and learning