题目C2.B3.B4.D5.D6.C7.A8.A9.A10.D11.B12.B13.B14.D15.A16.A17.B18.A19.D20.D21.C22.B23.D24.A25.C26.B27.C28.B29.C30.C31.B32.A33.D34.B35.B36.A37.B38.A39.B40.C41.B42.B43.A44.B45.B46.C47.C48.A49.C50.B51.C52.C53.C54.C55.D56...