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#6e232451-9e07-4c98-9566-cec27b76b1cd中等填空题空间点线面基本关系立体几何

1.如图,在正方体中,EEFFGG分别为ADADB1BB_{1}BD1C1D_{1}C_{1}上靠近AAB1B_{1}D1D_{1}的三等分点,M1M_{1}M2M_{2}N1N_{1}N2N_{2}P1P_{1}P2P_{2}分别是ABABB1C1B_{1}C_{1}DD1DD_{1}的三等分点,M3M_{3}N3N_{3}P3P_{3}为分别是ABABB1C1B_{1}C_{1}DD1DD_{1}的中点,则平面EFGEFG((  ))
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