1.A 2.A 3.D 4.B 5.A
1.ACDE 2.ACD 3.ABCD
1.√ 2.√ 3.× vC+wNKWqnczJf1GlzEwC9Au/EN8EWFi+5Ry4RXrYZjPIcugLjDxh6SPf/VbosHaz