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【简答题】
简要分析公共物品的特点，并据此对公共物品进行分类。
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A.
Right
B.
Wrong
C.
Not mentioned
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A.
can be the patients treated
B.
can the patients be treated
C.
the patients can be treated
D.
treated can be the patients
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A.
scene
B.
signal
C.
symbol
D.
site
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