Questions 27-30 For each question, only ONE of the choices is correct. Write the corresponding letter in the appropriate box on

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问题 Questions 27-30
For each question, only ONE of the choices is correct. Write the corresponding letter in the appropriate box on your answer sheet.

*

选项 A、asks permission before moving from room to room.
B、uses lasers to help it avoid objects.
C、is programmable.

答案C

解析

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Questions 27-30 For each question, only ONE of the choices is correct. Write the corresponding letter in the appropriate box on

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