题目内容
_____ according to the instructions, the robot can behave like a human being with average IQ.
| A．When to operate | B．When operating |
| C．When to be operated | D．When operated |
D
解析试题分析：考查非谓语动词。句中operate与逻辑主语为the robot为被动关系，故用过去分词。句意：当根据说明操作，机器人行为可以像普通智商的人类。故D正确。
考点：考查非谓语动词
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