单选题 A computer ______ think for itself. It must be told what to do.
  • [A] can't
  • [B] couldn't
  • [C] may not
  • [D] might not


【正确答案】 A
【答案解析】考查情态动词。could、may和might表示的都是一种可能性,只有can表示的是能力,而本题指的电脑是不能自己思考的,因此选can't。