[单项选择]

It was the day I froze a household pet that I began to worry about my memory. Technically, it was not a real household pet I froze but a bag of tropical fish, which on the scale of beloved members of any home, rank somewhere below the family cat and above an attractive set of coasters. And technically, I didn’ t completely freeze my fish. Rather, I absent-mindedly tossed them into the refrigerator with a bag of other things I had bought and fortunately found them just before my highly sensitive tropical fish could turn into lightly breaded dinner fish.
Nonetheless, that near-death experience--for the fish, if not for me--woke me up to the fact that my memory might not be all it once was:
In the hope of improving my memory, I decided I would first try the memory books. How-ever, much of what I read was, at first blush, utterly forgettable.
If I was truly going to juice up my recall, however, book reading wouldn’t cut it. What I needed was some k
A. relief
B. humor
C. worry
D. solemnity

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