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8.B
提示:先考慮時,圓上橫、縱坐標(biāo)均為整數(shù)的點(diǎn)有、、,依圓的對稱性知,圓上共有個點(diǎn)橫縱坐標(biāo)均為整數(shù),經(jīng)過其中任意兩點(diǎn)的割線有條,過每一點(diǎn)的切線共有12條,又考慮到直線不經(jīng)過原點(diǎn),而上述直線中經(jīng)過原點(diǎn)的有6條,所以滿足題意的直線共有條,故選B.