問題詳情：
Memory, they say, is a matter of practice and exercise. 16 But even if you are successful, there are times when your memory seems to play tricks on you.
17 One morning last week, for example, I got up and found that I had left the front door unlocked all night, yet I clearly remember locking it carefully the night before.
18 Once in a while you remember not doing something, and then find out that you did. One day last month, for example, I was sitting in a barber（理髮師）shop waiting for my turn to get a haircut, and suddenly I realized that I had got a haircut two days before at the barber shop across the street from my office.
We always seem to find something funny and amusing（有趣的）in incidents caused by people’s forgetfulness or absent-mindedness. 19 Unfortunately, however, absent-mindedness is not always funny. 20
A. Stories about absent-minded professors have been told for years, and we never got tired of
hearing new ones.
B. Memory “trick” work the other way as well.
C. If you have the wish and really made a conscious（自覺的）effort, then you can quite easily
improve your ability to remember things.
D. Generally forgetting things is serious and dangerous.
E. It is necessary to remember the way to protect yourself from memory “tricks”.
F. There are times when “trick” of our memory can cause us great trouble.
G. Sometimes you remember things that really did not happen.
【回答】
CGBAF
知識點：七選五題型
題型：未分類
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