【正确答案】
D
【答案解析】[听力原文]
Some of the most practical lessons coming out of research in psychology are the area of memory. People ask, why can"t I remember that term from the physical chapter or the date my library books in due?
Well, for a lot of people, memory may be weak, because they don"t use it enough.
It"s like a muscle; if you don"t exercise it, it won"t stay strong. That"s why it"s important to keep our mind active, to keep on learning throughout our life.
We can do this by reading, playing memory games and seeking out new experiences.
It"s my guess though that the lack of mental stimulation isn"t a problem for students like you. More likely, the lives you all live are so busy and stimulating that this in itself may sometime interfere with learning. Later on we will be discussing how information is recalled from memory. But, first, the information needs to be recorded, in other words, learned. And for busy people like you and me, that will be the real problem often lies. If we are distracted, or we are trying to think what we are going to do next, the incoming message just might not be getting recorded effectively.
And that leads to the first tip for students who want to improve their memories. Give full attention to the information you hope to retain.
Research clearly shows the advantages of this, and also of active learning, of consciously trying to visualize a new fact, perhaps to make a mental picture, even a wildly ridiculous one, so the new fact will stick in memory.
What makes many people have a poor memory?
[解析] 短文开头提到，对于许多人而言，记忆力较差的原因是因为他们对记忆力的使用不够充分。因此，D选项“他们没有对记忆力进行足够的锻炼”为正确答案。