Of all man’s natural enemies, the one that has caused him more trouble than any other must be the common rat. For centuries, man has been

　　21

　　to solve the problem of rats. The ancient Egyptians were probably the first people to try to

　　22

　　them with poison, and this method is still being used today. This says a great deal about how

　　23

　　this method has been. We have set innumerable

　　24

　　, from simple wires to

　　25

　　machines that drowned the rats in beer! We have tried to inflect them with

　　26

　　developed germs. We’ve

　　27 tried to raise super cats to kill them. However, we are still losing the

　　28

　　.

　　So why can’t man manage to

　　29

　　a mere animal like the rat? The answer is simply that the rat isn’t a mere animal; It is a very special kind of animal. An average rat

　　30

　　: wriggle through a hole no

　　31

　　than a $1 coin; climb a brick wall as if it were climbing steps; happily leave a building by being flushed down the toilet, and then return the same

　　32

　　; jump from a fifth storey window and run away

　　33

　　; and last but certainly not least ,

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