2014•x^(q)ģώُIbW(xu)Уһͯ(ji)ӕķNЦĘ͐ăɷNɷNărͬͬһNărͬڕҪُIrһ4λ֪һărDʾtăr飨
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Ԫ 1 2 3 4
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B.y=27xcy=x+
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D.y=27xcy=x+33
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