题目内容
In the experiment, scientists put ____monkeys in the room.
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The room was empty except for a tall (1)________ with a bunch of (2)________ at the top.
There was a (1)________ ________ hidden in the ceiling.
When the old monkey got near the top, the scientists sprayed it with (1)________ water and the monkey (2)________ and jumped back down.
The scientists took one of the monkeys out of the room and (1)________ it with another one. They also (2)________ the (3)________ head.
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