【摘 要】
：
·Which lever（控制桿）—A, B or C—should we pull to get each of the following: biscuits, paper and pencils? ·Which robot is going to stop?
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·Which lever（控制桿）—A, B or C—should we pull to get each of the following: biscuits, paper and pencils?
·Which robot is going to stop?
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