A good memory is often seen as something that comes naturally, while a bad memory as something that

A good memory is often seen as something that comes naturally, while a bad memory as something that cannot be changed.
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◆Take an interest.
We all remember the things we are interested in, and always forget the ones that bore us. This explains the reason why schoolboys remember football results easily but struggle（挣扎） with dates from their history lessons!
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◆Repeat things in chunks.(块）
Repeating things in chunks is the best way to remember things for a short time.
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The following numbers would be impossible for most of us to remember: 1492178919318483. But look at them in “groups” or “chunks” repeatedly and it becomes much easier:149 217 8919 318 483.
◆Invent a story.
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In experiments , people were asked to remember up to 120 words using this way. When they were tested later , they could remember about 90% of them. The test result was really amazing!
◆Take physical exercise
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Exercise also lowers stress. As we know ,too much pressure is very bad for the memory.
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使短文意思通顺、内容完整，并将其标号填写在下面题号后的横线上。
A. Develop an active interest in what you want to remember. One way to make yourself more interested is to ask questions--the more,the better!
B. Physical exercise is important for your memory, because it sends more oxygen (氧气) to your brain, and that makes your memory work better.
C. To remember long lists, try inventing a story which includes all the things you want to remember.
D. In fact, there is a lot that you can do to improve your memory. Here are some tips for you.
E. For example, remembering a phone number for a fewer seconds. Grouping numbers may help you to remember them.
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