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【单选题】
Which sentence from the section "Hide-And-Seek Was Fun For The Rats" explains why scientists knew that rats liked playing hide-and-seek?A.
They did "joy jumps."
B.
The scientists think that hide-and-seek might be a very old game.
C.
Games like hide-and-seek can help small animals.
D.
They can learn to hide from enemies.
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