皮皮学，免费搜题
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【单选题】
老子的核心概念是什么?A.
无为
B.
虚无
C.
道
D.
悟
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】Ben Jones was walking home from school one day when he saw a black cat. It was walking across the street in front of him. Ben stopped, turned around, and walked down a different street to go home. Why...
【简答题】阅读理解。 Ben Jones was walking home from school one day when he saw a black cat. It was walking across the srteet in front of him.Ben stopped, turned around, and walked down a different srteet to go home...
【简答题】Ben _____ (have) a cat. He has Scbastian, a bird.
【单选题】Ben _______ a cat. He has Sebastian, a bird.
A.
doesn't have
B.
no have
C.
no has
D.
not
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