皮皮学，免费搜题
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【单选题】
有一组供用户标识为感兴趣或不感兴趣的网页，可以被机器学习用来智能识别过滤网页，选择下列特征中哪个是通过训练这些网页来学习的？A.
样本
B.
任务
C.
经验
D.
性能
拍照语音搜题，微信中搜索"皮皮学"使用
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A.
People will not need cars, clothing and physical tools.
B.
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C.
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D.
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A.
In the future proceeding cars will be controlled by electronic systems.
B.
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C.
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D.
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