1.C 2.C 3.A 4.B 5.C 6.A
1.ABCD 2.ABCD 3.ABD
1.× 2.√ 3.× 4.√ 5.√ LDVOZgiE00syUMtHf2AQU0bcoX5LB8+p0Dqa21vO70JEavZBDKNur1uyFacLcUbj