A robot may______an action such as paint spraying by guiding its hand through the movements.

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问题 A robot may______an action such as paint spraying by guiding its hand through the movements.

选项 A、is taught
B、taught
C、been taught
D、be taught

答案D

解析 The sentence needs a passive-voice verb; be taught is the correct form after the modal may.

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托福（TOEFL）

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