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【单选题】
已知x-2y-5=0,则-x+2y+8=(  )
A.
-3
B.
3
C.
13
D.
-13
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举一反三
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A.
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B.
直接选配法
C.
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D.
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A.
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B.
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C.
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D.
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A.
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A.
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B.
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C.
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D.
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